"Who's That Chick?" is a song by French DJ David Guetta from the reissue of his fourth studio album One Love (2009), entitled One More Love (2010). The song features guest vocals by Barbadian recording artist Rihanna and was written by Kinda "Kee" Hamid, David Guetta, Giorgio Tuinfort and Frédéric Riesterer, with production helmed by Guetta, Tuinfort and Riesterer. It was released internationally as the second single on 22 November 2010 as a digital single, and was also released as a CD single and an Extended play (EP), the latter of which was released in the United States and contained remixes of the song.