Prince protege Denise 'Vanity' Matthews dies at 57

Denise "Vanity" Matthews, lead singer of the 1980s pop band Vanity 6 and a onetime protege of Prince, died of kidney failure on Monday at a hospital in Fremont, Calif. She was 57. Matthews' history with Prince began in the early 1980s when he was looking for backup singers. Her biggest hit, "Nasty...