Nancy "Slim" Keith, Lady Keith (born Mary Raye Gross; July 15, 1917 – April 6, 1990) was an American socialite and fashion icon during the 1950s and 1960s, exemplifying the American jet set. She and her friend Babe Paley were the thinly veiled inspiration for characters in Truman Capote's novel Answered Prayers. She is also credited with bringing Lauren Bacall to Hollywood's attention by showing her then-husband, producer Howard Hawks, a magazine cover with Bacall's picture on it.