Pop superstar Billie Eilish is set to perform at the 2020 Brit Awards next month, having swept the board at the 2020 Grammys.
The singer is riding high in the music world at the moment having scooped 10 gongs alongside her brother Finneas O'Connell at the Grammy Awards 2020 in LA on Sunday night.
She triumphed in the big four categories to enjoy five wins in total, while O'Connell triumphed in the Producer of the Year, Non-Classical category for his work on her album When We All Fall Asleep, Where Do We Go?
But just who is her brother Finneas O'Connell? Here's all you need to know.
Who is Finneas O'Connell and how old is he?
Born in LA on July 30, 1997, O'Connell is a multi-talented songwriter, record producer, singer, musician and actor
The 20-year-old is the son of actress and screenwriter Maggie Baird and the actor Patrick O'Connell, and the elder brother of Eilish.
Not only does O'Connell have a number of acting credits to his name, including Glee, Modern Family, Aquarius and the film Bad Teacher, but he also has been producing and co-writing his sister's music for a number of years, including being named a producer and co-writer on Eilish's debut album.
O'Connell is a singer-songwriter in his own right and released his debut EP Blood Harmony on October last year. He is also the lead singer and songwriter of a band called The Slightlys, who played on the Warped Tour in 2015.
Who is Finneas' girlfriend Claudia Sulewski?
O'Connell has reportedly been dating YouTuber Claudia Sulewski for a couple of years.
As a YouTuber and vlogger, Sulewski had a huge online following before she met the musician, with more than two million YouTube subscribers and 1.4 million Instagram followers at the time of writing.
She regularly updates her pages with beauty tutorials and travel vlogs, and has been a YouTuber for around a decade.
O'Connell wrote and released a single called 'Claudia' about her, which he worked on when they first met.
Is Finneas on Instagram?
He sure is, and he regularly updates his 1.7 million followers with glamorous shots of him at awards shows or more candid ones of him messing around with his sister and his friends in LA, or of him with Sulewski.
A lot of shots are of Finneas promoting his own work, or his sister's work, which comes as no suprise from a mega-successful musician.
You can follow him @finneas.
How many of Billie Eilish's songs has Finneas worked on?
Frankly, loads. He's been co-writing her music since 2015, which started when he gave her the song Ocean Eyes which they then posted on SoundCloud.
Not only did he co-write and produce her debut EP Don't Smile at Me in 2017 but also worked in the same capacity on her debut album.
His work on her music has earned him five Grammy Awards for Record of the Year, Song of the Year, Album of the Year, Best Engineered Album, Non-Classical and Producer of the Year, Non-Classical.
To add to this, he's also seen her music shoot to the top of the Billboard Charts, while his production on the Selena Gomez song also saw it reach number one in the Billboard Hot 100.
Who did he play in Glee?
O'Connell played the Alistair in the last season of Glee in 2015, who was the love interest of Spencer Porter, played by Marshal Williams.
He appears on one episode of the show, in which he is convinced to join New Directions with Skylar (played by Mylo Olivier) and Myron Muskovitz (who is played by J.J. Totah).
What other TV shows and films has O'Connell appeared in?
Among the numerous acting credits to his name, O'Connell appeared in one episode of the sitcom Modern Family in which he played Ronnie LaFonaine Jr.
He also appeared on two episodes of drama Aquarius in 2015.
O'Connell has two film credits to his name. In 2011 he appeared alongside Cameron Diaz in the film Bad Teacher, in which he played the student Spencer, and also played the role of Shane in 2013's Life Inside Out, which was written by and starred his mother Maggie Baird.
What is O'Connell's net worth?
According to the website Celebrity Net Worth, O'Connell is worth around $5 million, thanks to his work as a songwriter, producer and actor.
It remains to be seen what the Grammy haul will do to his bank balance too.
