The 34-year-old singer tied the knot with his girlfriend, Rochelle Karidis last year and now they are ready to welcome their first baby, reported Contactmusic.
"Because we love you all so much, we wanted to share with you, for the first time, something very special. We're having a baby," the couple announced in a video posted on Youtube.
The Backstreet Boys will start recording their new album in London in July 2012 and the band will head out on a tour later this year.