Fashion shows and DJ gigs are just the remedy for a breakup -- if you're Nick Cannon.

Cannon, in the midst of a split from wife Mariah Carey, was all over Fashion Week and parties this week in New York.

On Monday, he hit up Libertine's runway show at Lincoln Center, plus a party celebrating NBA star Chris Bosh's new tie line, Mr. Nice Tie.

Meanwhile, on Sunday, he played a surprise DJ set at The Ainsworth's NFL kickoff party, where a witness said he was in good spirits.

"Nick was in a great mood and seemed really happy," the spy dished.

Carey, 44, and Cannon, 33, have been married for six years and have 3-year-old twins, Moroccan and Monroe.