Skip to main contentSkip to footer

Billie Eilish stuns in a swimsuit in pool night throwback photo

The "What Was I Made For?" singer is celebrating her famous friend

Billie Eilish at the People's Choice Awards held at Barker Hangar on February 18, 2024 in Santa Monica, California.
Ahad Sanwari
Ahad Sanwari - New York
Senior WriterNew York
Share this:

Billie Eilish is celebrating a very special birthday, that being of her close friend Claudia Sulewski, aka her brother Finneas O'Connell's longtime girlfriend.

The singer, 22, has been friends with the actress and YouTuber, who turned 28 on February 19, for over five years, having first met when she started dating Finneas, 26.

The pair have been together since 2018 and have even worked together on some of the songwriter's solo musical projects (billed under FINNEAS), and he's been a part of her online content frequently.

Billie Eilish shares sneak-peek from making of second album with Finneas and Claudia Sulewski

Billie took to her Instagram Stories to share sweet tributes to Claudia, adding a snap of hers alongside which read: "birthday cloobi doobi."

She also included a throwback photo from a night in the pool, with Billie's then blonde locks in an updo as she clicked a selfie wearing a black swimsuit and a gold chain. Claudia, meanwhile, was even more submerged, and Billie captioned the snap: "Lucky 2 know u."

Finneas, meanwhile, took to his Instagram page with a sweet photo of theirs at home together, writing alongside it: "Happy birthday to my most precious Claudia who has made the world a better, brighter place since she got here – so lucky you were born when you were, so lucky to be around you."

Billie Eilish and Claudia Sulewski in a photo shared on Instagram© Instagram
Billie shared a birthday tribute to her friend Claudia Sulewski

After a birthday celebration at Girl & the Goat in LA with Finneas and friends, she wrote alongside a photo compilation on her social media: "Thank you for making yesterday feel so special. 

"Every cell in my body has been ricocheting with gratitude, love, ardor and the silliest amount of excitement… have never felt so at peace in my entire being, it truly becomes clearer each and every year! Thank you @casamigos! So many sweet memories and cocktails were made last night hehe."

MORE: Billie Eilish strips down to a deeply plunging waistcoat with matching pants for Grammys afterparty

The I Love My Dad star has been a fixture of several red carpets alongside her boyfriend, most recently at the 66th Grammy Awards and the 81st Golden Globes (where Billie and Finneas picked up trophies for their contribution to the Barbie soundtrack, "What Was I Made For?").

FINNEAS and Billie Eilish accept the Song Of The Year award for "What Was I Made For?" onstage during the 66th GRAMMY Awards at Arena on February 04, 2024 in Los Angeles, California.© Getty Images
Claudia, a YouTuber and actress, happens to be her brother Finneas' girlfriend

While Claudia and Billie enjoy a close relationship, the singer has not featured on her YouTube content often, and after several fans questioned why, Claudia responded in a YouTube Q&A back in 2020.

"I get a lot of comments from you guys asking why I don't put Billie in my videos," she started, reasoning that it was because of her huge fame, and she didn't want to attract unwanted attention.

MORE: Billie Eilish make defiant red-carpet appearance after hitting back at sexuality comments

"Billie is very famous, obviously, to the point where there's anything about her, or a split second of her, in one of my videos, it gets reposted and recorded, just shared everywhere. 

i had a pregnancy scare

"And I don't want or need that kind of attention on here, because I don't want people to think that that's what they're gonna get when they come [on my channel]," she continued.

MORE: Billie Eilish debuts the quirkiest change to her appearance at Barbie reunion

"If you're here, this is what you came for, this is what you're getting. So to answer that question, it is one hundred percent a conscious decision and choice."

Claudia Sulewski and FINNEAS at the portrait booth at the 81st Golden Globe Awards held at the Beverly Hilton Hotel on January 7, 2024 in Beverly Hills, California. © Getty Images
Claudia and Finneas have been together since 2018

Claudia explained also that not every moment in her life was recorded and put online, saying that it was "a very obvious statement."

Get the lowdown on the biggest, hottest celebrity news, features, and profiles coming out of the U.S. Sign up to our HELLO! Hollywood newsletter and get them delivered straight to your inbox. 

More Celebrity Style

See more