"Nasty Girl" is a song written and composed by American musician Prince. The song was first recorded by his protégée girl group Vanity 6 in 1982, who charted at number one on the US Hot Dance Club Play chart with their version. Prince gave the songwriting credit to lead singer Vanity, although he was the writer and composer. Inaya Day recorded a hit cover version of the song in 2004 that reached number 9 in the UK Singles Chart. There have also been several other versions of this song.