Kate Upton on David Letterman show {video}

David Letterman welcomes the 2012 “Sports Illustrated” Swimsuit Issue cover model, Kate Upton.

Kate Upton dating Mark Sanchez? When TMZ asked the blonde bombshell, who was revealed this week to have nabbed the coveted cover of the Sports Illustrated swimsuit issue, whether she was single, Upton turned the question around, responding, “What do you think?”

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