Kate Upton Dating ... Hip-Hop Mogul?

The latest celebrity odd couple: Sports Illustrated model Kate Upton and Sean "Diddy" Combs, 23 years her senior at 43. They were spotted making out at a Miami Beach club late last month, a source tells the New York Daily News. "They were kissing, they weren’t hiding it," the onlooker says. More recently, they were seen having dinner together in New York. Upton recently split with Detroit Tigers pitcher Justin Verlander, while Diddy was most recently linked with singer Cassie. NYDN's nickname: Diddyup. Gawker's choice: Kate Diddy. (On Twitter, Upton denies the whole thing.)