Kylie's Ex Parties On

It doesn't look like hunky Olivier Martinez is losing any sleep over his breakup from singer Kylie Minogue.

Just hours before the French actor and Aussie songbird announced Friday they had decided to call it quits after four years together, my spies spotted Martinez having a swell time here in Los Angeles.

Martinez and a gaggle of British pals, I'm told, hit the Morgans Hotel Group's Thursday night bash to celebrate the redesign of the legendary Skybar at the Mondrian hotel.

"He was dancing and drinking," my source says.

Also hitting the Skybar were Heath Ledger, Leelee Sobieski, Benjamin McKenzie, Shane West, Adam Brody, Michael Vartan and Jamie Kennedy.