Niall Horan of One Direction, Fifth Harmony, The Wanted, New Kids On The Block, Kathy Griffin, Austin Mahone, Perez Hilton, Megan Nicole, and their fans wish The Backstreet Boys a Happy 20 Year Anniversary! Official Site: http://www.backstreetboys.com Twitter: http://www.twitter.com/backstreetboys Facebook: http://www.facebook.com/backstreetboys Instagram: http://www.instagram.com/backstreetboys