Rapper A$Ap Rocky has been charged with assault after allegedly slapping a female fan during his performance at Jay Z's Made in America festival in Philadelphia, Pennsylvania on Saturday (31Aug13).

The young mum filed a criminal complaint with the city's District Attorney's Office on Wednesday (04Sep13), claiming the rap star lashed out her while he was making his way through the crowd, trying to avoid fans who were pulling on his shirt.

The unnamed fan told the authorities she was suffering whiplash from the impact of A$Ap's hand.

He has been charged with misdemeanour simple assault.