Keith Urban & Jennifer Nettles: CMA Country Christmas 2012!

Keith Urban and Jennifer Nettles perform on stage at the 2012 CMA Country Christmas concert taping at the Bridgestone Arena on Saturday (November 3) in Nashville, Tenn.

The 38-year-old Sugarland singer showed off her growing baby bump while being joined by her Duets co-judge John Legend during her hosting gig.

Colbie Caillat, Scotty McCreery, Little Big Town, The Band Perry, Lady Antebellum, and many others performed at the concert, which will be aired this holiday season on ABC.

25+ pictures inside of Keith Urban and Jennifer Nettles at the 2012 CMA Country Christmas…