LeBron James & Wife -- WE'RE MARRIED ... You May Gaze Upon Us Now

LeBron James has a third ring to add to his collection -- his wedding ring -- and Sunday morning, he was proudly sporting his new hardware as he emerged from his SoCal hotel with his brand new wife.

LBJ and his bride Savannah Brinson were spotted leaving the Grand Del Mar hotel in San Diego ... looking surprisingly well-rested considering the bash of the century that went down the night before.

As we previously reported, Jay Z and Beyonce performed at the shindig -- which was attended by 200 guests, including Dwyane Wade and Chris Bosh.