Barbados hottie Rihanna has denied that a sex tape of her and support act J-Cole is in existence.

Hustler magazine has alleged it has has a copy of the footage but is still undecided about whether to release to the amateur porno.

"Hustler are in possession of the Rihanna and J-Cole tape," a spokesperson for the magazine confirmed.

‘We have seen it and we do not know what we are going to do with it yet.’

Rihanna took to Twitter to attack the claims.

"We don’t believe U, U need more people…AND of course an actual sex tape! #slownewsday," she tweeted.

 J-Cole, who supported the S&M singer on her Loud tour this year, also joined the fightback on Twitter.

‘Gossip Gossip, n***a just stop it,’ the 26-year-old rapper tweeted.

While Hustler may still have some way to go to prove its massive claim, Rihanna has previous when it comes to sharing her sexy side.

Mobile phone snaps that appeared to show her topless found their way online a few years ago.