No Boys Allowed is the second and most recent studio album by American singer Keri Hilson. It was released on December 17, 2010, by Mosley Music Group, Zone 4, Inc. and Interscope Records. On the album, Hilson has reunited with Timbaland and Polow da Don, who executively produced the album, as they did with her debut release. Hilson also worked with several other producers and songwriters, including Ne-Yo, Tha Bizness, John Legend, StarGate, Bei Maejor and Boi-1da, among others. Meanwhile, Chris Brown, Rick Ross, Kanye West, J. Cole, Nelly and Timbaland, are serving as featured guest vocals. Musically, No Boys Allowed is an R&B album, which incorporates elements of pop, soul, electro and dancehall into various songs.