Derek Hough wants to remember all the steps of Hayley Erbert 's pregnancy journey.

Two months after the couple announced that they were expecting their first child together , the Dancing With the Stars judge showed off his wife of two years' growing baby bump in a heart-melting video.

In the clip posted to Instagram Sept. 15 , Hayley, 30, walked through a field of grass at golden hour while rocking a gorgeous Champagne-colored slip dress and heels. At one point, she stopped and turned to face the camera while cupping her pregnancy belly. And in a second video, she struck a similar pose while donning a jaw-dropping red midi dress before wrapping her arms around Derek, 40, to smile for a selfie.

Captioning the sweet footage, Derek wrote, "That’s my babie’S."

Back in July, t

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