Sources reveal exclusively to PerezHilton.com that none other than Mariah Carey will be performing at MTV's premiere party for The Hills later this month!An insider tells us that "The party will be held in NYC instead of LA, because Mariah is being a huge diva. She is scheduled to preform at the party, [...]
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[Source: Celebrity gossip juicy celebrity rumors Hollywood gossip blog from Perez Hilton]
