Iain Armitage
via CBS and @iain on Instagram
The titular character and star of Young Sheldon Iain Armitage is also the casts’ youngest actor. Not only is he the youngest cast member but he is also reportedly the highest paid per episode and at the age of 15 years old already has a net worth of $6million.
Raegan Revord
via CBS and @raeganrevord on Instagram
Throughout the period of seven seasons, we saw Raegan grow from a tiny nine-year-old to a full on teenager. She’s 16 now and looks so much more grown up from the little kid we met when the show aired in 2017.
Montana Jordan
via CBS and @montanajordan on Instagram
As the older brother to Sheldon and Missy, Montana was slightly older than his child actor co-stars and was 14 when the show started in 2017. Montana is now 21 years old and is so grown up that he has a child of his own! His daughter, named Emma Rae, was born in May this year and fans have speculated that the newborn’s middle name is a tribute to his Young Sheldon co-star Raegan Revord, as the spelling matches her first name.
Mckenna Grace
via CBS and @mckennagraceful on Instagram
Despite only being in nine episodes, Paige was a hugely popular character. Being a genius turned rebel, she had one of the most interesting storylines and it’s a real shame it wasn’t explored more throughout the show. Mckenna Grace, who is now 17, has been acting since she was four years old and joined the cast of Young Sheldon for its second season in 2017 when she was just 11.
Ryan Phuong
via CBS and @thewyattmcclure on Instagram
In This Big Bang Theory Sheldon often recounted how he didn’t have any friends when he was younger, but this is proved wrong almost instantly in Young Sheldon when we meet his childhood friend Tam. Played by Ryan Phuong, he is 22 years old now so seven years older than Iain despite the pair playing class mates.
