Leonardo DiCaprio and Rihanna got super steamy as they partied together at the Playboy Mansion on Saturday night.

The Wolf of Wall Street star, who is reported to have split from his girlfriend Toni Garrn last month, and the S&M hitmaker were spotted getting "hot and heavy" at designer Nikki Erwin's 30th birthday party.

According to TMZ, a couple of eyewitnesses saw the pair share a sneaky smooch, but a friend of Leonardo's has told the gossip website that was not the case.

The pair partied alongside several other stars, including Paris Hilton, Tom Hardy, Naomi Campbell, Pamela Anderson, Hilary Duff and Tobey Maguire.

The 40-year-old actor is said to have been invited to the bash by Nikki's producer boyfriend, Chuck Pacheco, and while it is not known whether he left with the 26-year-old stunner, they are thought to have ended up at the same after-party along with rapper 50 Cent.

DiCaprio looked to have been having a good time at the after-party, as he jokingly photobombed a picture of Naomi and the 39-year-old star. He uploaded the image on his Instagram account.

Last month, it was reported that DiCaprio had officially split from his girlfriend Toni, 22, after dating on and off for two years.