The Big Bang Theory has been making audiences laugh since its premiere in 2007, when we were first introduced to the geeky but brilliant crew of CalTech researchers and their neighbor, Penny. After 10 years on the air, here’s what the cast looked like then and now.
Kaley Cuoco as Penny Hofstadter – Then
Penny is the only one of the girls who has been on The Big Bang Theory since the pilot first began airing in 2007. A very pretty, aspiring actress who financed her ambitions by working at The Cheesecake Factory. Leonard developed a crush on her almost immediately, but never expected her to return his affections. To his surprise, Penny also developed feelings for Leonard and after several road blocks to their relationship, they eloped in Vegas in the ninth season.
