Succession star Kieran Culkin is now almost as famous as his older brother - but not many people know that he also starred in Home Alone.
It's been over 30 years since the original movie, where Macaulay Culkin's schoolboy is left to fend for himself and defend his home from nasty intruders in a manner of hilarious ways.
Up until 2011, the film held the record for being the highest grossing live action comedy ever after making $476.7 million worldwide and turned child actor Macaulay into a superstar.
Macaulay, who was just 10 at the time, was cast as the cheeky eight-year-old who was incredibly skilled at creating harmful contraptions to stop the hapless burglars.
But he wasn't the only Culkin on set, as Kieran also appeared in the movie as Kevin's bed-wetting younger cousin Fuller.
Kevin was fuming that he was designated to sleep in the am bed as his cousin before their Christmas trip to France.
Fuller drank from a can of Pepsi and his mother advised him to go "easy" on the fluids because of his bed-wetting ways, prompting the lad to grin at Kevin.
In real-life, Kieran was acting alongside his actual brother and had no idea what the hit movie was about until he watched it.
Speaking to James Corden in 2020, Kieran confessed he wasn't really aware of the plot when they made the film as he was only seven-years-old.
"There's a part in the movie where there's a kid who gets his head counted incorrectly and he goes, 'Bye, bring me back something French!' I thought the movie was about that kid," Kieran explained.
"And it made sense when I saw it. I remember seeing it in the theatre at the premiere and I was dying laughing and I was like, 'Oh, that makes sense 'cause Mac was on set all the time.'"
Kieran also appeared in the film's sequel, Home Alone 2: Lost in New York, but this time it was a can of Coca-Cola he was swigging from.
It was actually Fuller who sounded the alarm when they arrived in Florida to reveal that Kevin was missing once again.
Macaulay went on to appear in My Girl, The Nutcracker, The Good Son, Getting Even With Dad and Richie Rich and hosted Saturday Night Live.
He also became friends with Michael Jackson, famously appearing in the music video for 'Black or White', and is godfather to the pop singer's kids Paris, Prince and Michael Jr.
After making a whopping 15 movies in just seven years, he then decided to take a four-year break from acting to attend a private high school.
At the age of 14, Macuaulay controversially divorced from his parents to stop them controlling his vast fortune as they battled for custody after they split.
Looking back on that time in a recent interview, Kieran said all he could think was "poor f***ing guy" when he saw his brother's rise to fame.
"He was little and having to try to accept that level of fame as reality," Kieran told Esquire.
"Even at that time, as a kid, I remember thinking, 'that sucks for him'."
Kieran actually turned down many offers because he did not feel ready for the same celebrity circus as his brother.
"I would not have been able to handle it, and I think I knew that," he explained. "I would not have been able to handle whatever kind of success or attention came from that. So I quite literally ran away from it."
Kieran went on to star in feature films including Scott Pilgrim vs The World (2010), Father of the Bride (1991) and She's All That (1999) and has also appeared in Fargo and Robot Chicken.
But what he is best known for is his incredible portrayal of Roman Roy in hit HBO series Succession, which has probably made him just as famous as his brother.
