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Hip-hop mogul Sean "Diddy" Combs says he's not dating "Sports Illustrated" swimsuit cover model Kate Upton. 

Responding to reports about the two being spotted together recently, Diddy tweeted an "Attention" to "all media" hours after the reports began circulating Wednesday.  He wrote:

Upton's camp also denied the rumors, telling TMZ that the two "barely know each other" and are definitely not dating. 

The "New York Daily News" reported earlier that the two were "hot and heavy" at Miami's LIV nightclub on March 24th and that they got together last week for dinner at a hotel in New York. 

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