But the sparky lad has very much stepped out of his big sister's shadow. Here is the lowdown on the star, including his extensive dating history.
Who is Sam Thompson, how old is he and what is his background?
Sam Thompson is a reality TV star who joined Made In Chelsea during the sixth series, back in 2013.
Like most of the cast, Sam had a privileged upbringing and attended the £28,000-a-year Bradfield College in Berkshire.
Sam moved into sister Louise Thompson's west London flat and was very much a side character on the show to begin with.
He even worked as Jamie Laing's Candy Kittens intern – doing menial tasks such as picking up his dry cleaning.
However, following a makeover and a new white pearly smile, Sam stepped out of the shadows and confirmed his place as a key character.
He had a tumultuous relationship with MIC co-star Tiffany Watson and he was also a fan favourite on Celebs Go Dating and Celebrity Big Brother 2017
What has Sam Thompson done outside of Made in Chelsea?
Since rising to fame on Made in Chelsea, Sam Thompson has landed a string of reality TV show appearances.
He came third in the 2017 series of Celebrity Big Brother and in 2018 he appeared in
Celebs Go Dating alongside fellow Made in Chelsea star Ollie Locke.
Although he failed to find love on the series, he did become best pals with Towie's Gemma Collins.
Sam is now a keen vlogger, who has his own YouTube channel with over 26,000 subscribers.
Who has Sam Thompson dated?
When Sam first joined MIC he tried, and failed, to romance Fran Newman-Young by cooking her a slap-up meal at Louise's flat.
Sam's ex-girlfriend Riley Uggla joined the show in 2014, for season 7 of the show, but left after the NYC spin-off series.
Lucy Watson's sister Tiff joined the show in 2014, during series 8, and immediately set her sights on Sam.
Cheating allegations about Sam broke the couple apart, but they later reunited.
However, in 2015 the couple split again – after Tiff admitted to sleeping with somebody else while on holiday in Thailand.
The couple got back together once more at the very end of series 10, but split over the summer when Sam bedded co-star Mimi Bouchard in Ibiza while the pair were "on a break".
In an exclusive for The Sun Online Sam revealed that he is completely over Tiff and the pair no longer speak.
In 2018 Sam was rumoured to be dating Love Island's Danielle Sellers.
When is Made in Chelsea Series 16 on E4?
Series 16 of Made in Chelsea continues on E4 on October 29 at 9pm.
The show will air at the same time each week.
Fans can catch up on any episodes they miss online at All 4.
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