"Puttin' on the Ritz" is a popular song written an published in 1929 by Irving Berlin and introduced by Harry Richman in the musical film Puttin' on the Ritz (1930). The title derives from the slang expression "putting on the Ritz", meaning to dress very fashionably. The expression was inspired by the swanky Ritz Hotel. The song gives Gary Cooper as an example of someone who puts on the Ritz.