Kaley Cuoco has given hope to nerds everywhere with her winning performance as Penny in The Big Bang Theory.

A pin-up in the California girl mold for those with explosive synapses, the heroine of the CBS comedy is the heart at the center of this hugely popular show.

And the 26-year keeps giving because this photoshoot she’s kindly done for the March edition of Zooey magazine is bound to go up on a few walls.

Kaley told Adelaide Now how the show has brought out her inner nerd. She said: ‘I think we all have different moods – a nerd one day and cool the next.

Kaley who found fame on the hit show 8 Simple Rules, previously dated her Big Bang Theory co-star Johnny Galecki after meeting him on set. The relationship ended after two years.