Diddy, Jamie Foxx, Vic Mensa, and More Assist 'Hand in Hand: A Benefit for Hurricane Harvey Relief' [PHOTOS]Diddy, Jamie Foxx, Vic Mensa, and More Assist 'Hand in Hand: A Benefit for Hurricane Harvey Relief' [PHOTOS]Oprah Winfrey and Sean 'Diddy' Combs were among the stars on-hand to help with the effort.BoomBox StaffBoomBox Staff