This is where "Baby It's Cold Outside" comes from. Also: pretty ladies in swimsuits.
Neptune's Daughter is a 1949 musical romantic comedy film released by Metro-Goldwyn-Mayer starring Esther Williams, Red Skelton, Ricardo Montalbán, Betty Garrett, Keenan Wynn, Xavier Cugat and Mel Blanc. It was directed by Edward Buzzell, and features the Academy Award winning song Baby, It's Cold Outside by Frank Loesser.
Neptune's Daughter was the third movie that paired Williams and Ricardo Montalbán together, the other two being Fiesta (1947) and On an Island with You (1948), and the second to co-star Red Skelton (1944's Bathing Beauty).
Williams discovered she was pregnant with her first child with husband Ben Gage early into shooting.
Williams contracted with Cole of California to appear as their spokesperson before making the film. As a result, the company created the suits that Williams and the aqua chorus wore throughout the film. After filming was done, Williams's doctor ordered her to stay away from activity, and she instead gave swimming lessons to blind children. ...