who played derek's sister on grey's anatomy
Caterina Scorsone In 2010, Scorsone joined the cast of Shonda Rhimes' drama series Private Practice in the recurring role of Amelia Shepherd, the sister of Derek Shepherd from Grey's Anatomy.[8] She was cast after Eric Stoltz, who was directing one of the show's episodes, heard about the role of Amelia and remembered Scorsone from working with her on My Horrible Year! He mentioned her to Shonda Rhimes and commented on the resemblance Scorsone had to Patrick Dempsey (the actor who plays Derek Shepherd).[6] As of July 2010, Scorsone had been promoted to series regular for Private Practice.[9] She appeared in the third episode of the seventh season of Grey's Anatomy where Amelia and Derek started to reconcile their differences.[10]