Derek Hough and Hayley Erbert are expecting their first baby together, the couple announced on Instagram on Tuesday, July 22.

Hough and his wife, Hayley Erbert, have announced that they're expecting their first baby together. The Dancing With the Stars alums shared the news with a dreamy Tuesday Instagram video that sees them embracing against the backdrop of a scenic landscape while Alexander Jean's "So Small" plays.

Derek Hough and his wife Hayley Erbert Hough are going to be parents. The couple announced the sweet news with an Instagram video Tuesday. "We can't believe the biggest thing to happen to us could be so small," Erbert Hough wrote in the caption of the joint post.