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Billie Eilish Fans Think Her Brother’s Fiancée Looks Just Like Singer
It has been nearly six months since Billie Eilish’s brother Finneas O’Connell proposed to his long-time girlfriend Claudia Sulewski, and fans still can’t get over her resemblance to the ‘Bad Guy’ singer.
It’s no secret that Eilish and O’Connell have an incredibly close relationship, not only as siblings and friends, but as colleagues too, co-writing, producing and performing some of the singer’s biggest hits.
One track, which was written and produced by O’Connell was ‘Ocean Eyes’, which became an accidental hit when it was uploaded to SoundCloud for a dance assignment in November 2015, before going viral and getting millions of plays in a matter of days.
Since then, Eilish’s career has catapulted her to global stardom, earning her 10 Grammy Awards, two Academy Awards and many more along the day.
Despite her success, the 24-year-old has made headlines for a number of different reasons in the decade since she released her first track.
In October 2025, she sensationally called out a room full of billionaires and urged them to donate some of their riches, while accepting the Music Innovator Award at the WSJ Magazine Awards.
“We’re in a time right now where the world is really, really bad and really dark and people need empathy and help more than, kind of, ever, especially in our country,” she told the audience, which included names like Mark Zuckerberg, Hailey Bieber, Ben Stiller, Chris Rock and many more.
“I’d say if you have money, it would be great to use it for good things, maybe give it to some people that need it. Love you all, but there’s a few people in here that have a lot more money than me. If you’re a billionaire, why are you a billionaire? No hate, but yeah, give your money away, shorties.”
According to eyewitnesses, Zuckerberg, who is reported to be worth a tidy $257 billion, did not join in with the round of applause.
Meanwhile, the star was previously accused of ‘queerbaiting’ back in 2021, following the release of her Lost Cause music video and an Instagram post related to the track.
Critics said she was using queer imagery for commercial gain, however Eilish has since revealed she is LQBTQ+ herself as she is attracted to women and men.
Fans convinced Claudia Sulewski looks just like Billie Eilish
With Eilish and Sulewski set to become real life sisters when the YouTube star and O’Connell tie the knot, many fans can’t quite believe just how much the two women actually look like they could be related.
The pair have been dating since 2018 after reportedly meeting on a dating app, with the music producer getting down on one knee and proposing in September 2025.
O’Connell previously revealed his partner is a ‘huge influence’ when it comes to the music he makes.
“Claudia has been a huge influence on my music in terms of just like how important she is to my life,” he told Us Weekly.
“I think I’ve always tended to write about my true real-life experiences and she’s definitely at the core of all of that. So there’s a lot of songs about Claudia.”
While the producer’s comments are definitely touching, many people have chosen to focus on the similarities between his fiancée and his younger sister, with one TikTok user even uploading a montage of images of both women to stress the fact.
Alongside a skull emoji, the page wrote: “People think Billie Eilish’s brother is dating a girl that looks just like her.”
One TikTok user wrote: “They look similar ENOUGH for it to be kinda ick,” while another added: “Her side profile is literally Billie.”
A third wrote: “I thought I was the only one who noticed… OK then, it’s really strange!”
“If I didn’t know Billie and you told me they were twins I’d believe you 100%,” a fourth added.
A fifth commented: “Nah, he’s dating Billie’s clone.”
Not everyone agrees with the similarities though, with one commenting: “Noooo, they don’t look the same at all.”
“WHERE’S the resemblance?” another questioned, while a third suggested the video was ‘reaching.’
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