Lady Gaga got all glammed up for her Grammy nomination concert rehearsal at Nokia Theatre LA Live today, but she also took the time to greet hundreds of rabid fans outside of the venue. Yesterday Gaga tweeted, "I am so excited to OPEN and CLOSE the Grammy Nomination concert 2moro night! What a blast rehearsing with Jennifer and Kristian. Sugarland!" Nominations will be announced tonight, and Rihanna and Usher are also set to perform at the show. We can't remember last year's noms being so star-studded -- any chance these artists are hoping to get a little bit of extra credit with The Recording Academy?

After belting it out this afternoon, Gaga tweeted, "At some point today i'll be drunk watching finale of Victoria'sSecretFashionShow on repeat. Models in panties dancing to BORN THIS WAY #yes." Good to know!