01/16/2012 AT 01:45 PM EST
Hopefully Matt LeBlanc knows of a good dry-cleaning service.
star, 44, who won a Golden Globe
for best lead actor
in a TV musical or comedy on Sunday, says he owes it all to the Otto suit he donned at the awards show.
"This is the winning tuxedo," LeBlanc told PEOPLE at the InStyle
/Warner Bros. Golden Globes afterparty. "This is the lucky one."
LeBlanc said he owns "five or six" tuxedos altogether, and explained that he was shocked when he won.
"I thought, 'Did I just hear that right?' " he says. "I didn't see it coming at all."
As for celebrating the momentous occasion, the former Friends
star planned to "run in [the party] and have a couple of cocktails."