"Smile" is a song by American singer Katy Perry for her sixth studio album of the same name (2020). It was released on July 10, 2020, by Capitol Records as the second single from the album, along with the album's pre-order. Musically, it is a nu-disco song which samples Naughty by Nature's 1999 song "Jamboree". On the song, Perry talks about expressing her gratitude for changes in her life. Music critics complimented the song's message and upbeat production, but deemed it lyrically simplistic and critiqued its redundant sound. A version featuring American rapper Diddy is featured on some vinyl versions of the album, while remixes of the song by Giorgio Moroder and Joel Corry have also been released to promote the song. "Smile" was performed during the SiriusXM Hits 1 and the concert residency Play (2021–2023).