Jason LaVeris/FilmMagic
November 30, 2012

Kaley Cuoco, The Big Bang Theory's token hot girl, turns 27 today! The actress got her start at six years old (she starred in Barbie ads as a kid!), and went on to star in 8 Simple Rules before landing her gig as the struggling-actress/Cheesecake Factory waitress Penny, the female foil to a group of endearingly awkward boys on her hit CBS show. Here's to hoping she has a fabulous day that goes off with, yes, a big bang!Plus, see how to get Kaley's radiant skin.

MORE:More Celebrity Skincare TipsKaley's Winter WhitesKaley on the SAG Awards Red Carpet

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