Is that a wig Mariah Carey is wearing? Oh, cool. That means Lady Gaga and Mariah can be wiggy selfie queens together then. One night before she wraps up her residency at New York's Beacon Theater, Mariah received a backstage visit from the 'Fame' pop empress. Mimi will wrap up her six-show residency on December 22nd after kicking off a string of dates last week on December 15th.