Cannon celebrated his 2-8 in Las Vegas (where the pair have been loitering) Tuesday night. Wife Mimi threw a celebration at Pure nightclub, complete with a butch cake and Gucci accessories.

"It was a crazy night with those two, in a good way," a source tells Celebuzz. "They didn’t leave PURE until 3:30 a.m."

Ever the multitasker, Cannon pulled double duty as birthday boy and resident DJ at the popular night spot, located inside Caesars Palace.

If Cannon and his sometimes-actress bride can sleigh ride through the holidays, make it past Mariah's 39th birthday in March and manage to next April, they'll celebrate their one year anniversay.