Reese Witherspoon is a proud mum of three gorgeous children and that includes her middle son, Deacon, who looks just like her. The Big Little Lies actress, 44, shared a very sweet photo with her 17-year-old on Instagram Stories and they look more like brother and sister than mum and child. Reese was in the passenger seat of her car with Deacon at the wheel in the photo and she captioned it: "When I'm tired, Deacon always offers to drive me."MORE: Reese Witherspoon's Instagram photo of daughter