A representative for Matt LeBlanc has shut down rumours suggesting the Friends star was caught cheating on his actress girlfriend Andrea Anders at a recent Halloween (31Oct14) party.

The actor, 47, was photographed with a mystery bikini-clad blonde woman, who had draped her arm over his shoulders, at a costume bash in Austin, Texas, and the snap sparked reports LeBlanc had been unfaithful to Anders, his girlfriend of eight years.

But his spokesperson has blasted the unfounded accusations, insisting the funnyman left the party solo.

The publicist tells Eonline.com, "That absolutely did not happen. Fans were coming up to him all night asking for pictures."

LeBlanc and Anders began dating in 2006 after meeting on the set of his doomed Friends spin-off series, Joey.