Hip-hop mogul Sean 'Diddy’ Combs' is facing trial on federal charges, including sex trafficking and racketeering.

Cassie Ventura took the witness stand Tuesday in Manhattan to testify against her ex-boyfriend, Sean "Diddy" Combs, in his federal trial for sex crimes.

Sean ‘Diddy’ Combs has been jailed since September and faces at least 15 years in prison if convicted. Casandra met Combs in ...