Her publicist Harlan Boll confirmed that the actress died peacefully in her sleep early on Thursday, June 6 in Beverly Hills. She was 91, reported Ace Showbiz.
Williams initially dreamed of competing for the Olympic Games in US swim team. She won at least three gold medals in the national championship and was set to represent the country in the 1940 Summer Olympics in Finland, but her dream was crushed when the Games was cancelled because of World War II.
Williams was first introduced in an Andy Hardy movie, starring as Mickey Rooney's love interest, and her debut got positive response.
Seeing her potentials, MGM promoted her as a leading star in "Bathing Suit" which turned into a smash hit. The company then built a USD 250,000 swimming pool for her.
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Williams starred in a dozen of movies including "Jupiter's Darling" and "Million Dollar Mermaid". A mixture of romance, comedy and underwater spectacle, they were relatively well-received, but she felt the need to break out of her comfort zone.
She begged MGM for a more serious role in non-swimming film, which they rejected but later reluctantly, gave to her.
Her most successful non-aquatic movie was "Take Me Out to the Ball Game" where she played an owner of a baseball team which players included Gene Kelly and Frank Sinatra.