Billie Eilish fans shocked after finding out brother Finneas starred alongside Cameron Diaz in Bad Teacher

Another day, another nepo baby discourse - and this time, Billie Eilish fans are stunned to learn that her brother, Finneas O'Connell, was in a popular 2011 film.

Billie stans are hungry for all of the information they can find about the Oscar-winning singer, her love life and her family following the widespread success of her album earlier this year, Hit Me Hard and Soft.

It seems all of Billie's loved ones are getting the background check of late, with a post going viral about the fact her mum, Maggie Baird, appeared in an episode of the most well-loved sitcom of the 90s and 00s, Friends.

The episode Maggie features in is called 'The One Where Joey Loses His Audience', and sees her playing the part of Casting Director 2, while Joey Tribbiani (Matt LeBlanc) auditions in front of her.

The gag is that he has an extremely painful hernia so can hardly move - but needs the job in order to pay for the medical care.

The pain ultimately means he can't lift the product as the casting process requires.

Instead he suggests: "Or I could just point to it? Blah, blah, blah Purina One. Point to a bag today."

The clip, which was posted to Instagram, attracted a sea of comments calling Billie a 'nepo baby' - a term short that is short for 'nepotism baby' and refers to a successful child of well-established, famous or influential parents with industry connections.

In other words, the famous child in question got ahead due to having the parents they have.

One comment said: "Sooo…. She didn’t just came out of nowhere… she’s an industry bby."

Billie's brother, Finneas, retorted: "Ah yes, the classic, 1 day of work on 1 episode of friends to make someone rich and famous - the whole gag of this video is none of you had any idea at all who she was."

It seems his comment just turned the spotlight on him and his own potential nepo baby ways.

A quick look at the cast list for comedy film Bad Teacher, shows that Finneas did in fact make an appearance alongside Cameron Diaz, where he played the role of Spencer.

One person wrote: "Fun fact: finneas was also one of the kids who had a minor role in the cameron diaz movie 'bad teacher'! both finneas and maggie had small roles as extras on diff shows/movies."

Someone quickly came to the siblings' defence, writing: "thankfully billie and finneas have parents who listened to what they wanted in life and let them do it."

Beyond his extra role in the movie, he appeared in titles such as Life Inside Out, Modern Family, and Glee, among others.

His main gig is being a singer-songwriter, though and he's credited as a songwriter on the Oscar-winning song from the Barbie soundtrack, What Was I Made For?, alongside Billie.