The 28th annual MTV Video Music Awards go down tonight in L.A. -- but some hot stars already got a head start on the celebration.
Lady Gaga, Joe Jonas, Sean Kingston, Mary J. Blige, Nicole Scherzinger and more were all spotted at different pre-VMA parties all over town Friday and Saturday.
Jonas and Cobra Starship performed a special concert at the House of Blues benefiting Lifebeat, a HIV/AIDS prevention charity.
Gaga, Scherzinger, Mary J. and others were seen at the Atom Factory VMA Dinner hosted by Ciroc Vodka at The Beverly.
Check out all the hot pre-party action above!
