How The Big Bang Theory Cast Has Changed Since Their 1st Season

Take a look back at the stars of the beloved series during their early days on the show

The Big Bang Theory: what the cast looked like at the start of their careers

Young Sheldon's Difference Shows Why Big Bang Theory Ended

The Big Bang Theory cast prepares for the end of CBS hit comedy, big bang theory

Kaley Cuoco Opens Up About Her Pixie Cut on The Big Bang Theory: 'That Decision Bit Me in the Ass

The Big Bang Theory: The Biggest Changes in Howard From Season 1 To Season 12

See the Cast of 'The Big Bang Theory' Season 1 vs. Today - In Touch Weekly

8 Ways Young Sheldon Completely Changes Big Bang Theory

Big Bang Theory' Cast From Season 1 to the Series Finale: Pics

Big Bang Theory's Kaley Cuoco opens up on major change to stop Penny being 'sexualised', TV & Radio, Showbiz & TV

The Big Bang Theory' Cast Felt 'Blindsided' by Jim Parsons' Exit

How The Big Bang Theory Cast Has Changed Since Their 1st Season

The Big Bang Theory' Cast: Where Are They Now?

How 'Big Bang Theory' characters have evolved over 12 seasons

The Big Bang Theory': Behind The Sudden Decision To End The Series

10 Shows to Watch If You Like 'The Big Bang Theory