Katy Perry and Billie Eilish Spread Holiday Cheer in Festive Red and Green Ensembles at KIIS FM’s Jingle Ball Main Event

Katy Perry and Billie Eilish were all smiles in festive red and green attire as they prepared to headline KIIS FM’s Jingle Ball at The Forum in Inglewood, Los Angeles. Interestingly, both pop stars happen to work with the talented stylist, Samantha Burkhart. Katy, 35, flaunted her figure in a lace bustier paired with a full tulle skirt, complemented by matching heels and a beret.

Katy Perry (pictured) and Billie Eilish looked merry in red and green outfits before co-headlining KIIS FM's Jingle Ball at The Forum in Los Angeles' Inglewood neighborhood on Friday

Coincidentally, the SoCal pop star rivals employ the same stylist, Samantha Burkhart

Katy Perry and Billie Eilish were all smiles in festive red and green outfits as they prepared to co-headline KIIS FM’s Jingle Ball at The Forum in Los Angeles. Katy’s outfit perfectly matched her candy cane earrings and the stunning $5M Neil Lane engagement ring that Orlando Bloom gave her on Valentine’s Day. Her makeup artist, Michael Anthony, went all out with Katy’s makeup – from her contoured complexion to her defined brows and bold red lips. Hairstylist Rick Henry also worked his magic, giving Katy’s growing out platinum-blonde hair a chic bob-style look. During the event, Katy caught up with her American Idol co-host Ryan Seacrest as they gear up for the show’s 18th season premiere on February 16 on ABC.

35-year-old Katy showcased significant cleavage in a lacy bustier tucked into a voluminous tulle midi-skirt with matching pumps and beret

She was clearly influenced by the bustier and tulle skirt Madonna wore for her first live performance of Like a Virgin at the MTV VMAs

Inspired by Madonna: Katy Perry, who is 35 years old, flaunted her ample cleavage in a stylish bustier paired with a full tulle midi-skirt. Completing her look with coordinating pumps and a beret, she exuded a vintage and glamorous vibe.

Accessories: The 13-time Grammy nominee's attire matched her candy cane earrings and the $5M Neil Lane engagement ring her fiancé - Carnival Row star Orlando Bloom - popped the question with on Valentine's Day

Accessories: The outfit of the artist who has been nominated for 13 Grammys was perfectly complemented by her festive candy cane earrings, as well as the stunning $5 million Neil Lane engagement ring given to her by her fiancé, Orlando Bloom from Carnival Row, as a Valentine’s Day proposal.

Heavy handed: Make-up artist Michael Anthony painted Perry's contoured complexion, lashes, defined brows, and red matte pout

Skilled make-up artist Michael Anthony expertly enhanced Perry’s features with a contoured complexion, bold lashes, well-defined brows, and a striking red matte lip.

Twirling on the red carpet! Hairstylist Rick Henry gave the Pete Buttigieg supporter's growing out platinum-blonde hair a bob-style boost

Sashaying down the red carpet! Hairstylist Rick Henry worked his magic on a Pete Buttigieg supporter’s transitioning platinum blonde hair, giving it a chic bob-style transformation.

Hello again! While there, Katy reunited with her American Idol host Ryan Seacrest, and the duo will return for the 18th season premiering February 16 on ABC

Hey there! Katy recently caught up with her old American Idol buddy Ryan Seacrest, and fans can expect to see them back together for the show’s 18th season premiere on February 16th on ABC. Katy reportedly rakes in a whopping $25 million per season for her role as a judge on the show, as reported by TMZ. After spending time with Ryan, Katy changed into a stylish hot-pink snowflake-print mini-dress and matching go-go boots to perform her latest single, Cozy Little Christmas. The happy bride-to-be will soon be heading to Illinois to headline the B96 Pepsi Jingle Bash at Allstate Arena in Rosemont on Saturday. Katy’s appearance comes after reports from Us Weekly that her wedding to her British fiance has been postponed due to their desired location.

Huge ornament! Perry later changed into a hot-pink snowflake-print mini-dress and matching go-go boots to perform her new single, Cozy Little Christmas

Big decoration! Perry then switched up her look by putting on a bright pink dress with a snowflake design and wore matching go-go boots for her performance of her latest song, “Cozy Little Christmas.”

Jet setter: The daughter of Pentecostal pastors will next fly to Illinois to headline Saturday's B96 Pepsi Jingle Bash at Allstate Arena in Rosemont

Globe-trotter: Following her performance at the B96 Pepsi Jingle Bash at Allstate Arena in Rosemont, the daughter of Pentecostal pastors will jet off to Illinois.

Second time down the aisle: Perry's sighting came three days after Us Weekly claimed she's postponing her wedding to Carnival Row star Orlando Bloom (L) 'due to the location they want' (pictured November 24)

The soon-to-be bride was all smiles as she was photographed just two days after reports claimed her wedding with the British 42-year-old was being postponed due to the chosen location. The couple, who first got together in January 2016, reunited last year after spending some time apart to focus on themselves in February 2017. This upcoming marriage will mark the second trip down the aisle for both partners, with Orlando having previously divorced Miranda Kerr in 2013 and Perry divorcing Russell Brand in 2012. Meanwhile, Billie, who will turn 18 in a little over a week, opted for her signature baggy and androgynous attire to steer clear of being objectified. Billie has been sporting a unique neon-and-black mullet after a mishap where a hairstylist accidentally damaged half of her hair, as reported by TMZ.

Billie sported her usual baggy, androgynous athleisure attire in order to avoid being 'sexualized'

It's hard  to believe she's turning 18 in just 12 days

Approaching her 18th birthday in less than two weeks, Billie confidently rocked her signature oversized, gender-neutral sporty look to steer clear of any unwanted sexual attention.

Yikes! Eilish has been rocking a neon-and-black mullet for the last month ever since an unnamed hairstylist 'burnt half of it off' by accident

Oh no! Eilish has been proudly sporting a vibrant neon and black mullet for the past month after a hairstylist unintentionally ‘singed off’ half of her hair.

Skipped her usual acrylic nail art: The Highland Park vegan shielded her Tammy Yi-made-up face with nineties retro sunglasses

She decided to forego her regular acrylic nail designs and instead donned a pair of nineties-inspired sunglasses to protect her Tammy Yi makeup-adorned face. The Highland Park vegan opted for a different look for the day.

Airing January 26 on CBS! The xanny hitmaker removed her shades to take a snap with Seacrest, who likely congratulated her on scoring six nominations for Grammy Awards

Set to air on January 26 on CBS, the artist known for her hit “xanny” was spotted without her signature shades as she snapped a photo with Seacrest. With six Grammy nominations under her belt, she likely received some congratulations from Seacrest during their meeting. Sporting a Tammy Yi makeup look and keeping it low-key with nineties-style sunglasses, the Highland Park vegan also ditched her usual acrylic nail art for the occasion. During her performance on stage, Billie showed off her flexibility by bending over backwards while wearing a T-shirt with Britney Spears print and basketball shorts. Fans can catch Billie and her brother Finneas O’Connell at the Inglewood Forum on January 18 where they will be headlining the iHeartRadio ALTer EGO event.

Bendy: Once onstage performing, Billie (literally) bent over backwards while clad in a Britney Spears-print T-shirt and basketball shorts

Bendy: During her performance on stage, Billie showed off her flexibility by bending over backwards, wearing a T-shirt with a Britney Spears print and basketball shorts.

Sibling act: Eilish and her big brother Finneas O'Connell (L) will return to the Inglewood Forum on January 18 to headline iHeartRadio ALTer EGO

Brother-sister duo, Eilish and Finneas O’Connell, are set to take the stage at the Inglewood Forum on January 18 as the headliners for the iHeartRadio ALTer EGO concert.

Family affair: The Bad Guy singer also employs her parents Maggie Baird and Patrick O'Connell as her personal assistant/fan- outreach coordinator and utility player

Family ties run deep in the music industry, as demonstrated by the Bad Guy singer who has her parents, Maggie Baird and Patrick O’Connell, on her team. They play important roles as her personal assistant/fan outreach coordinator and utility player, showcasing the value of family support in the entertainment world. In addition to her familial support, the Bad Guy singer also has other connections in the industry. Two former members of the popular girl group Fifth Harmony, Camila Cabello and Normani, took the stage at a concert sponsored by Capital One on Friday night. During her performance, the Cuban singer, Camila Cabello, wowed the audience with her new single Romance, dressed in a striking outfit designed by Michael Ngo. The event marked a stylish appearance for the three-time Grammy nominee, who arrived in white-ruffled co-ords and silver stilettos selected by her talented styling duo, Mariel Haenn and Rob Zangardi.

The X Factor alums: Two members of the disbanded girl group Fifth Harmony - Camila Cabello (pictured) and Normani - performed at Friday night's Capital One-sponsored concert

The X Factor alums: Two members of the disbanded girl group Fifth Harmony - Camila Cabello and Normani (pictured) - performed at Friday night's Capital One-sponsored concert

Former members of the group Fifth Harmony, Camila Cabello and Normani, who gained fame from The X Factor, took the stage together at a concert sponsored by Capital One on Friday night.

Drag queen chic: The Cuban 22-year-old sang her new single Romance while clad in a red garter belt, puffed-sleeve creation designed by Michael Ngo

Redefining glamour with a touch of drag queen flair, the 22-year-old singer from Cuba dazzled the audience as she performed her latest hit, “Romance”, in a stunning red garter belt and puffed-sleeve ensemble created by the talented designer Michael Ngo.

Snowball: The three-time Grammy nominee arrived to the venue wearing white-ruffled co-ords and silver stilettos selected by styling duo Mariel Haenn and Rob Zangardi

Snowball, who has been nominated for three Grammy awards, made a stylish entrance at the event in a matching white outfit with ruffles, paired with shiny silver stilettos chosen by fashion experts Mariel Haenn and Rob Zangardi.

Werrrk! The Atlanta-born 23-year-old (last name Hamilton) showcased her enviable dance moves in a white-studded leotard with matching chaps for her set

Werrrk! The Atlanta-born 23-year-old (last name Hamilton) showcased her enviable dance moves in a white-studded leotard with matching chaps for her set

Get ready to be amazed! The talented 23-year-old artist, hailing from Atlanta with the last name Hamilton, flaunted her impressive dance skills while rocking a stunning white-studded leotard paired with matching chaps during her performance.

Fetish wear turned mainstream: Chaps were also seen on Bad Side singer Breanna Rubio, who performed in the rain earlier at the same festival

Fetish-inspired clothing now a fashion statement: Chaps made an appearance on singer Breanna Rubio of Bad Side as she rocked out in the rain during the festival.

Quick change: The Savage X Fenty Show catwalker originally arrived on the red carpet clad in a sheer green turtleneck mini-dress and chrome stilettos selected by stylist Kollin Carter

A quick wardrobe change was in store for the Savage X Fenty Show model as she switched from a sheer green turtleneck mini-dress and chrome stilettos to a white-studded leotard with matching chaps. The 23-year-old dancer, also known by her last name Hamilton, wowed the crowd with her incredible moves at the event. Chaps made another appearance on Breanna Rubio, the singer of Bad Side, who braved the rain to perform at the same festival. The original outfit chosen for the catwalk was a sheer green turtleneck mini-dress and chrome stilettos, styled by Kollin Carter. Singer Halsey, a two-time Grammy nominee, took the stage in a corseted white tank-top and multi-color bandanna-patch pants styled by Zoe Costello while performing her latest tracks.

Yikes! Two-time Grammy nominee Halsey performed her two new songs clad in a corseted white tank-top and multi-color bandanna-patch pants selected by stylist Zoe Costello

Wow! Halsey, who has been nominated for a Grammy twice, sang her two latest tracks while wearing a white tank top with a corset and colorful bandanna-patch pants handpicked by stylist Zoe Costello.

Hello Ryan! The 25-year-old Jersey Girl (born Ashley Frangipane) arrived to the show in a side boob-flashing grey midi-dress and white booties

Hey Ryan! The 25-year-old woman from New Jersey, also known as Ashley Frangipane, made quite an entrance on the show with her grey midi-dress and white booties, revealing a hint of side boob.

Seven strong: Halsey was celebrating her new single SUGA's Interlude co-written by South Korean boyband BTS, who suited up in b&w tuxes for Jingle Ball

Halsey was all smiles as she celebrated the success of her latest single “SUGA’s Interlude,” which was co-written by the popular South Korean boyband BTS. The group looked sharp in black and white tuxedos at the Jingle Ball event. The 25-year-old artist, also known as Ashley Frangipane, made a statement in a grey midi-dress that showed off a hint of side boob, paired with stylish white booties. Adding to the star-studded lineup, former One Direction member Louis Tomlinson took the stage at the festive concert. The British singer, who will be turning 28 this month, opted for a more casual look to promote his new track “Don’t Let It Break Your Heart.” The holiday-themed event was filled with talented performers and music lovers alike.

Speaking of boybands! Former 1D singer Louis Tomlinson was also among the performers onstage the holiday-themed concert

When it comes to boybands, let’s not forget about Louis Tomlinson from the popular group, One Direction. He graced the stage alongside other artists at the festive concert.

B&W attire: The Doncaster-born Brit - turning 28 this month - dressed down to promote his latest track Don't Let It Break Your Heart

Donning a black and white outfit, the British artist from Doncaster, who is about to celebrate his 28th birthday, kept it casual as he showcased his new song “Don’t Let It Break Your Heart.”

Cool dad: At one point, Ryan (L) welcomed Oscar winner Jamie Foxx (M) onstage alongside his curly-maned 11-year-old daughter Anelise (R) with babymama, Kristin Grannis

Awesome dad moment: During the event, Ryan brought Oscar winner Jamie Foxx on stage with his 11-year-old daughter Anelise and her mom, Kristin Grannis. Lizzo, an eight-time Grammy nominee, rocked a unique outfit featuring an asymmetric gold top, leopard-print pants, and shiny patent leather booties styled by Marko Monroe. The multi-talented 31-year-old artist hit the stage in a silver bra, black corset, and denim panties. Meanwhile, four-time Grammy winner Sam Smith sported white silk drawstring pants, a dark iridescent blazer, and square-toed platforms styled by Lauren Armes.

Yasss! Eight-time Grammy nominee Lizzo bared a single arm in her gold top, which she paired with leopard-print pants and patent leather booties selected by stylist Marko Monroe

Yasss! Lizzo, a talented artist with eight Grammy nominations, confidently showed off one arm in a stunning gold top. She rocked the look with stylish leopard-print pants and shiny patent leather booties put together by her stylist, Marko Monroe.

Daisy Duke alert! The 31-year-old singer-rapper-flutist stormed the stage in a silver bra, black corset, and denim panties

Look out for Daisy Duke vibes! The 31-year-old multi-talented artist made a bold statement on stage with a silver bra, black corset, and denim panties.

'Jingle ball bish!' Four-time Grammy winner Sam Smith donned white silk drawstring pants with a dark iridescent blazer and square-toed platforms selected by stylist Lauren Armes

Sam Smith, a four-time Grammy winner, showed off their stylish flair with a chic ensemble at the jingle ball event. They rocked a sleek combination of white silk drawstring pants, a dark iridescent blazer, and square-toed platforms that were handpicked by their stylist, Lauren Armes.

Fabulous: The 27-year-old London-born Brit changed into a pastel pink top and pants to do a duet of Dancing with a Stranger with Normani (2-R)

Fantastic: The 27-year-old British singer, originally from London, switched into a soft pink outfit consisting of a top and pants to perform a collaboration of Dancing with a Stranger with Normani (2-R).

Daytime Emmy winner Sarah Michelle Gellar wore a plunging b&w-patterned mini-dress with black tights and booties

Sarah relies on stylist Anita Patrickson

Sarah Michelle Gellar, known for her role in Buffy the Vampire Slayer, was spotted in a stylish black and white patterned mini-dress paired with black tights and booties. The outfit was curated by her stylist, Anita Patrickson, adding a touch of elegance to her look.

Billie superfans: It was a family bonding day for BH90210's Jason Priestley and his wife Naomi Lowde, who brought their 12-year-old daughter Ava Veronica (2-R) as well as her gal pal

Fans of Billie Eilish were in for a treat as BH90210’s Jason Priestley and his wife Naomi Lowde spent a day bonding with their 12-year-old daughter Ava Veronica and her friend at the concert. The 27-year-old British singer, dressed in a pastel pink outfit, performed a duet of Dancing with a Stranger with Normani. Sarah Michelle Gellar, a Daytime Emmy winner, rocked a plunging black-and-white patterned mini-dress paired with black tights and booties styled by Anita Patrickson. Real Housewives of Beverly Hills star Kyle Richards was also spotted at the event wearing a beige cape alongside her husband Mauricio Umansky and their 11-year-old daughter Portia.

Chic: The Real Housewives of Beverly Hills star Kyle Richards donned a beige cape alongside her second husband Mauricio Umansky and their 11-year-old daughter Portia

Stylishly outfitted: Kyle Richards, a star of The Real Housewives of Beverly Hills, was spotted wearing a fashionable beige cape while out with her second husband Mauricio Umansky and their 11-year-old daughter Portia.

Bravo-lebrity: Kyle's RHOBH castmate Teddi Mellencamp Arroyave escorted her husband Edwin were the cool parents to her 11-year-old stepdaughter Isabella and their seven-year-old daughter Slate

Celeb Kyle from Real Housewives of Beverly Hills was joined by her fellow castmate Teddi Mellencamp Arroyave and her husband Edwin in parenting duties for their blended family, which includes Kyle’s 11-year-old stepdaughter Isabella and their own seven-year-old daughter Slate. They make quite the cool parenting team!

Date night! Fresh Off the Boat funnyman Randall Park wore an Army-green jacket to the Jingle Ball alongside his wife of 11 years, Jae W. Suh

On their date night at the Jingle Ball, Randall Park from Fresh Off the Boat sported an Army-green jacket alongside his wife of 11 years, Jae W. Suh. Meanwhile, Teddi Mellencamp Arroyave from RHOBH looked effortlessly cool with her husband Edwin and their kids, Isabella and Slate. Hannah Brown, the Mirrorball champ from Dancing with the Stars, rocked a sparkly blue turtleneck mini-dress that matched her eye shadow perfectly, styled by Sonia Young. And Chris Soules from The Bachelor 19 kept it laid-back in a maroon Henley top, grey jeans, and brown boots.

The Bachelorette 15! Hannah Brown matched her eye shadow to her sparkly blue turtleneck mini-dress and black stilettos

The DWTS Mirrorball champ relies on stylist Sonia Young

Hannah Brown, winner of DWTS Mirrorball, dazzled in a sparkly blue turtleneck mini-dress and black stilettos styled by Sonia Young, perfectly matching her eye shadow for The Bachelorette 15!

'Thanks for having me!' The Bachelor 19 star Chris Soules kept it casual in a maroon Henley top, grey jeans, and brown boots

‘Thank you for inviting me!’ said Chris Soules, star of The Bachelor 19, as he showed up in a laid-back outfit featuring a maroon Henley top, grey jeans, and brown boots.

Newlywed kiss: Speaking of which, Bachelor 19 alum Ashley Iaconetti Haibon and her husband Jared got extra cozy packing the PDA on in their pink Dunkin Donut-sponsored sweaters

Recently married couple Ashley Iaconetti Haibon and Jared were spotted getting affectionate in their matching pink Dunkin Donut-sponsored sweaters. Meanwhile, Parenthood stars Ella and Mia Allan had an unforgettable night meeting Katy Perry in their coordinating plaid outfits and stylish Dr. Martens shoes. The adorable twins were almost as cute as Jiff the Pom, a nine-year-old Pomeranian influencer with a massive following of 9.6 million Instagram fans.

Twinning! Parenthood starlets Ella (L) and Mia (R) Allan 'had the best night ever' meeting Katy Perry in their matching plaid minis and patent leather Dr. Martens

The stars of Parenthood, Ella and Mia Allan, were thrilled to meet Katy Perry while wearing matching plaid dresses and stylish Dr. Martens boots. They had an unforgettable night and were twinning in style!

Golden pedestal: The tiny twins were almost as cute as nine-year-old Pomeranian influencer Jiff the Pom, who boasts 9.6M Instagram followers

Shiny platform: The small pair of twins were just as adorable as Jiff the Pom, a popular nine-year-old Pomeranian influencer with a whopping 9.6 million followers on Instagram.

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