Young Girl In Shorts

Since about World War II, when soldiers often served in tropical locations, adult men have worn shorts more often, especially in summer weather, but the perception of shorts as being only for young boys took several decades to change and to some extent still exists in certain circles. By the late 20th century however it became common for men to wear shorts as casual wear in summer.
However, in many countries there are few formal settings where wearing shorts would be acceptable, as they are considered casual wear. Notable exceptions where men may wear short trousers to the office or at a formal gathering are South Africa, Bermuda, Australia and New Zealand.
Since the 1990s, casual office dress has grown in some U.K. and U.S. businesses, but by no means universally, to include formal shorts. Gym and jean shorts are still seen as too casual for office attire.