1904 R. Thomas (rev. ed.) 112 It is very difficult to get photographs of amateur ladies in swimming costume.
1962 F. C. Avis 95 Swimsuit, a superior or elegant swimming costume, with particular reference to the female bather.
1977 N. Slater iii. 58 A twenty-nine-year-old married woman..who wore a bathing cap and a one-piece swimming costume.