Rock out: Grammy Nominations 2011

Music's hottest night kicked off with a live, star-studded Grammy nominations concert that left Eminem with an impressive 10 award nods, Stevie Wonder chuckling at the teleprompter, and Justin Bieber tongue-tied over his first nomination. 

Katy Perry mugged for photos with fans outside Club Nokia before stepping inside to later rock the stage with her rendition of - how fitting - "California Gurls." 

The anticipation for the Grammys begins to build after the stars come out to play, literally. Click through to see who else turned out for the big pre-game... 

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