Prince is being sued by a New York law firm for $700,000, according to reports.

The company claim that the singer owes them $700,000 in legal fees, which include providing financial services in cases with his ex wife, reports Billboard.

Patterson Belknap Webb & Tyler have filed the claim after Prince failed to pay the cost for cases in Ireland, California and New York.

There has been no response from Prince's Paisley Park Enterprises Inc.

Meanwhile, Kim Kardashian has expressed her delight after Prince invited her on stage at a gig in New York.

(by Holly Frith)