Derek Hough and Hayley Erbert celebrate Christmas together just weeks after Hayley's emergency skull surgery

Julianne Hough embraces her loved ones after sister-in-law Hayley Erbert's emergency skull surgery: 'Holding my family extra tight this holiday season'

Derek Hough Has 'Hope & Optimism' For Wife Hayley Erbert's Recovery After 'Successful' Skull Surgery

Derek Hough Pre-Taped Disney Christmas Parade Special Before Wife Hayley's Medical Emergency