Marilyn Monroe & Jane Russell both in white halterneck dresses. I think this photo was from 1953 when they put their signatures, hand and footprints in cement outside Graumans Chinese Theatre (below)

 

Source, source and copyright: This work is in the public domain because it was published in the United States between 1923 and 1963 and although there may or may not have been a copyright notice, the copyright was not renewed.