Dempsey, 59, shared a rare photo of his twin sons Darby and Sullivan, who recently celebrated their 18th birthdays and graduated from high school.

Patrick Dempsey and his wife, Jillian Dempsey, celebrated their twin sons Darby and Sullivan's high school graduation May 30. See photos from their big day!

Patrick Dempsey posts rare photo of twin sons at graduation: ‘So proud of you boys' Dempsey attended the ceremony with his wife, Jillian Dempsey, and their daughter Talula.