The 28-year-old model and actress first appeared on the cover of Playboy's Girls of the Pac-10 October 2005 issue. She went on to become the mag's Miss July 2006 and was later crowned Playmate of the Year in June 2007. Sara was the first Miss July to receive the title, although she herself said, "I didn't think I was pretty enough". In March 2008, Playboy magazine ranked her at #25 on their "25 Hottest Playboy Celebrities" list.

Her film credits include 2007's 'Epic Movie', the 2008 comedy, 'The House Bunny' starring Anna Farris, 2009's 'Miss March' starring Zach Cregger and Trevor Moore of the Whitest Kids U Know, and 2010's blockbuster action flick, 'Knight and Day' starring Tom Cruise and Cameron Diaz. Her next movie project is the direct-to-DVD horror thriller Zellwood, in which she plays the lead.

Underwood beat out Princess Kate Middleton for Esquire's title of 'Hottest Woman of 2012' in addition to doing an incredibly seductive shoot for the mag's 'Me In My Place' feature.

While the professionally produced shots are lights out, her party pics on Twitter are just as mind-numbing. What were we doing?

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