According to sources, Jay-Z and Kanye recently joined forces to perform at a teenage girl’s Sweet 16 party last Saturday at the Carlton Hotel in New York. The party the guest of honor was Leslie Taylor, daughter of one of Hov’s business associates. Singer Ryan Leslie was also in attendance to sing “Happy Birthday” to the woman of the hour at the end of the evening. Jay and Kanye then took the stage and later posed with the birthday girl.

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