By Breaking Celebrity News Staff

With her mile-long legs and blonde mane, gorgeous teen Kate Upton was revealed as the covergirl of 2012 Sports Illustrated Swimsuit issue on The Late Show with David Letterman Monday.

As tradition, a billboard in New York City’s Times Square was unveiled to be the cover of this year's issue, showcasing the sexy 19-year-old model in a red-and-brown, sparkle-covered string bikini.

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“And it’s Kate Upton,” Letterman said. “That’s a beautiful picture, oh my goodness, congratulations.”

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The 5-foot-10 Michigan-born stunner is making her second appearance in the magazine, as she was named 2011’s rookie of the year. She’s also appeared in commercials for Carl’s Jr.