Greta Thyssen (born Greta Thysegen; March 30, 1927 – January 6, 2018), was a Danish-born American actress and former model. She was born in Copenhagen, Denmark. She was known for being the double of Marilyn Monroe in the movie "Bus Stop" and many other of her movies. She was also a co-star in "The Three Stooges". She also appeared "Accused of Murder", "Terror Is a Man", "Three Blondes in His Life" and "Journey to the Seventh Planet".