Kate Upton Graces the Cover of 2012 Sports Illustrated Swimsuit Issue

Voluptuous model, Kate Upton is this year's cover girl for the annual Sports Illustrated swimsuit issue. INSIDE EDITION has Upton's back story.

INSIDE EDITION is learning more about the 2012 Sports Illustrated swimsuit cover model, Kate Upton.

Just 10 months ago, Upton was an unknown model, posing in lingerie in catalogues. Then, she posted a YouTube video of her dancing in her seat at a Los Angeles Clippers game. The video went viral, caught the attention of modeling agents and the rest in history.

The swimsuit cover was unveiled Monday night on The Late Show with David Letterman.

Upton even got in on Letterman's "Top Ten" list: "The Top Ten Reasons Why This Year's Sports Illustrated Swimsuit Issue Is The Best One Ever."

She even took the jokes in stride as she presented the list and said, "Number Two: The art department was able to airbrush my mustache."