New York, Aug 31 : Tennis champ Serena Williams was seen dancing and enjoying with her ‘alleged’ boyfriend, rapper Common, at a party.

The Grand Slam winner was present at the wrap party of Common’s new flick, "Just Wright", at Greenhouse earlier this week, and proceeded to spend all night with him.

"They were having fun, dancing, and affectionate," the New York Post quoted a witness as saying.

Other celebs present at the party were Rihanna, Robin Thicke, and Common''s co- star Queen Latifah.

In 2008, People Magazine reported Williams was dating rapper Common however, both have always kept low profile on their relationship. (ANI)