Kate Upton and P. Diddy have denied they are dating.

The rap star has been linked to the Sports Illustrated Swimsuit Issue model after they were reportedly seen kissing in a Miami Beach bar late last month, and has now taken to Twitter to insist he isn't even ''personally'' close to the blonde beauty.

Diddy, 43, told his followers: ''Attention all Media. I don't even know Kate Upton personally! I'm not dating her! What's being reported is not true. END of story! (sic)''

Kate backed up the musicians' post and re-tweeted a message which claimed the pair were ''sucking face''.

She wrote: ''Really??? Not at all true... ''@TheCut: .@KateUpton and @IamDiddy seen sucking face and dining out!'' (sic)''

A source claimed the pair were getting intimate in the VIP area of Club LIV during a party held by Diddy.

They said: ''They were kissing, they weren't hiding it.''

Kate split from Detroit Tigers pitcher Justin Verlander in February, while the 'I'll Be Missing You' hitmaker - real name Sean Combs - has most recently been linked to singer Cassie after they were spotted house hunting together in Beverly Hills at the beginning of the year.