Christina Aguilera, Lady Gaga and Jay-Z have joined forces with Mary J.
The R+B singer is auctioning a trip to meet her on the set of upcoming biopic Nina, about legendary soul star Nina Simone, this summer (11) in Los Angeles, while Aguilera's winning bidder will visit her at a taping of TV singing contest The Voice.
Rapper Jay-Z has offered a coveted month-long internship at his record company Roc Nation and Gaga will greet one lucky fan behind the scenes at an upcoming New York City concert.
Bidding for the auction begins on 1 June (11) at www.charitybuzz.com/Ffawn.
