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18 February 2020, 21:00 | Updated: 4 March 2021, 16:35
Who is Billie Eilish's older brother, Finneas O'Connell, does he have a girlfriend and what's his net worth?
Billie Eilish's brother Finneas O'Connell is her music producer, songwriter and ultimate bestie.
But who is Billie's brother Finneas exactly? What songs is he known for and does he have a girlfriend? Here's everything you need to know about...
Finneas O'Connell is an American singer-songwriter, who goes by the name 'Finneas'.
He was born on 30 July, 1997, making him 23 years old.
On the side of his singing career, the star has also acted in various TV shows and movies, including independent film, Life Inside Out, Glee, Bad Teacher and Modern Family.
Finneas grew up in Los Angeles with his mum Maggie Baird, and his father Patrick O'Connell. He is also the older brother of 'Bad Guy' singer, Billie Eilish, whose real name is actually Billie Eilish Pirate Baird O'Connell.
He is an established music producer, who helped put together Billie's debut album and works with her on all of her songs.
He's actually been producing music since the age of 12 and is also in a band called The Slightlys.
Finneas is currently dating Claudia Sulweski. Claudia is a popular YouTuber who shares beauty and fashion tips with her 1.9million subscribers. The brunette beauty also has an impressive 1.6million followers on Instagram. You can follow her @claudiasulewski.
Unsurprisingly, Finneas' track 'Claudia' was written about his love.
Yup, he sure is! Fans can follow him and keep up-to-date with his latest news @finneas.
He mostly posts behind-the-scenes snippets of making music with Billie and photos with his girlfriend Claudia.
Finneas is 5 feet, 5 inches tall.
It's estimated that Finneas O'Connell is worth a whopping $20 million (£14.3 million).
His little sister Billie is currently valued at $53 million (£40 million).
Finneas has not only collaborated with his little sister, he co-wrote and co-produced her debut EP, Don't Smile at Me.
He also helped produce her first album, When We All Fall Asleep, Where Do We Go?, and is the only other writer credited on the LP, which went straight to number 1 in the US and UK charts.
He also co-wrote and produced their Bond theme song 'No Time To Die'.
Finneas' debut track was 'New Girl', which was released in 2016 - the music video for which featured O'Connell and Yasmine Vega.
The following year, he released the single 'I'm in Love Without You', before dropping 'Heaven', 'Life Moves On', 'Hollywood Forever', 'Luck Pusher', 'Break My Heart Again' and 'Let's Fall in Love for the Night' in 2018.
Finneas has also produced songs for Camila Cabello, Selena Gomez, Halsey and Tove Lo!