LMFAO is an American electro pop duo consisting of rappers, producers, dancers, and DJs Redfoo who recorded the song “Sexy and I Know It” from their second studio album, Sorry for Party Rocking and was released as the third single from the album on September 16, 2011. The song became the group’s second number one hit on the Billboard Hot 100 in the United States, making them the first duo to have two successive number-one singles since OutKast’s “Hey Ya!” (2003) and “The Way You Move” (2004).