• Iain Armitage was THIS old when he started 'Young Sheldon'
  • He plays the main character in the show
  • Armitage was very young in season one

The incredible powerhouse Iain Armitage (15) took the world by storm with the the hit sitcom 'Young Sheldon.' But how old was he when he started the show?

Chuck Lorre, the mastermind behind 'The Big Bang Theory,' knew the prequel's fate rested on the small shoulders of a child actor who could embody "Sheldon." Enter Iain Armitage's audition tape, which left Lorre and co. gobsmacked at their luck. "He was just spectacular," gushed Lorre to Channel 4. Even Jim Parsons (adult "Sheldon") was left jaw-dropped, praising Iain's "naturalness" and "spirit."

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A young prodigy's entrance into "Sheldon"s world

The young actor Iain Armitage stepped into the shoes of the prodigious Sheldon Cooper, adding a new dimension to the iconic character. But at what age did Armitage undertake this formidable task?

He was 9 years old when he commenced his role as "Young Sheldon"! This revelation not only underscores the actor's remarkable talent but also sheds light on the youthful spirit that infused the character from the very beginning.

The young star's take on fame? "I am really enjoying it," he beamed to Ellen DeGeneres back in 2017. "I love everything about Sheldon. He's such an interesting guy." And when it comes to playing "Sheldon" versus his darker role as "Ziggy" in 'Big Little Lies,' Iain's got the chops for both comedy and drama, with a little help from mentor Parsons to get into the genius mindset.

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As we continue to enjoy the unfolding adventures of 'Young Sheldon,' it's a nod to Armitage's youthful charisma and skillful portrayal that laid the foundation for this beloved character.