When "Young Sheldon" first captured our hearts, Iain Armitage was just a 9-year-old boy stepping into the shoes of the genius Sheldon Cooper. Little did we know, this show would transform from its inception to a 7-season wonder, leaving the audience in awe of the drastic changes.
As we navigated through the storyline, the actors grew alongside their characters.
The one and only Sheldon Cooper has completely transformed from the awkward nine-year-old we knew in season one.
He was Iain Armitage's first major role and we've seen the actor grow up with his character, and now he's had roles in Big Little Lies, The Glass Castle, Paw Patrol and more.

Sheldon's comical twin sister was played by Raegan Revord, who started the show when she was nine-years-old just like her on-screen brother. Raegan has completely transformed in the role from an adorable young actress to a professional.

Georgie went from an argumentative 14-year-old to a girl dad in the final season when he had daughter, CeeCee, with girlfriend, Mandy. Surprisingly, the same thing happened to Georgie's actor Montana, who's just had a baby girl named Emma Rae Jordan with his girlfriend Jenna Weeks.

The on-screen mother to the Cooper family has barely aged since starting the role six years ago and still feels like the same Mary Cooper we know and love.

Fans were heartbroken to see George’s death and funeral in the final two episodes of Young Sheldon after growing to love the character who was completely different than his description in The Big Bang Theory.
The article is not finished. Click on the next page to continue.
Next page