Vocal trio Leading Ladies were formed in 2017 by three literal leading ladies of London's West End stage. Beverley Knight had a two-decade career as one of Britain's best-known soul singers under her belt before she reinvented herself as a musical theater actress in 2013, playing Rachel Marron in The Bodyguard -- the role made famous by Whitney Houston. Turns in Memphis and Cats followed, the former earning her an Oliver Award nomination. Amber Riley made her name as Mercedes Jones on the hit TV show Glee, winning an Screen Actors Guild Award for her performance. While the sho...