Margaret Yvonne Middleton (or Yvonne De Carlo; September 1, 1922 – January 8, 2007) was a Canadian and American actress. She originally appeared in B movies. She played Lily Munster in the CBS television program "The Munsters" in the mid-1960s. She played Sephora in the 1956 movie "The Ten Commandments". She also performed in a lot of musical stage plays.