Overview
"I Feel Pretty" is a song written by Stephen Sondheim and Leonard Bernstein from the 1957 musical West Side Story.
Production
The New York Times explained that "Mr. Sondheim…has said he was never particularly fond of his lyrics in 'West Side Story,' especially 'I Feel Pretty, later expressing that "The idea of the song is so simple".
The original stage version of the lyrics was changed in the making of the 1961 movie version of West Side Story due to a change in the scene's occurrence. Making 'I feel pretty and witty and bright/And I pity/Any girl who isn't me tonight' into 'I feel pretty, and witty and gay/And I pity/Any girl who isn't me today'. In the movie this night scene was changed to the daytime, so the rhyming words "bright" and "tonight" were changed to "gay" and "today". The lyrics were changed back to their original form for the 2021 film version.
The song was cut from the 2019 Broadway revival in order to streamline the plot and condense it to a 90-minute intermissionless show.
From Wikipedia (CC BY-SA 4.0).