One of the Boys is the second studio album by American singer Katy Perry. It was released on June 17, 2008, by Capitol Records. She collaborated on the album with producers Greg Wells, Dr. Luke, Dave Stewart, Max Martin, and Ted Bruner among others, and wrote most of the songs in collaboration with other producers and writers. However, the title track, "Thinking of You", and "Mannequin" were all written by Perry alone. The EPUr So Gay, containing the song of the same name, was released in 2007 to generate interest in the singer and the album.
