Michelle Obama made a surprise appearance at the Grammys tonight in Hollywood and was joined on stage with Lady Gaga, Jada Pinkett Smith, Alicia Keys Michelle and Jennifer Lopez:

It was all a big secret, naturally:

She also posed backstage with the ladies:

Yeah, yeah, yeah . . . but what’s going on with J Lo’s hat?

Anyway, Michelle will be hosting the Oscars next after this reception: