David Arquette super 8 after party

Who can pull off wearing a black suit, sneakers and a wifebeater all at once? Our favorite fashionisto David Arquette, of course.

After leaving the Super 8 premiere after-party, Courteney Cox's estranged hubby was in great spirts and chatted up the photographers.

David has been enjoying his sober life ... even resuming his partnership with Beacher's Madhouse at the Roosevelt Hotel in Hollywood. Gotta love this guy!