Time to take Kelly Clarkson off the "available" list.

The 29-year-old "American Idol" champ announced on a Toronto radio station that she is dating 35-year-old Nashville-based talent manager Brandon Blackstock, the son of Narvel Blackstock, Clarkson's own manager, and the stepson of singer Reba McEntire.

The singer has not dated since her split from singer Graham Colton in 2006.