Reese Witherspoon's ex husband Ryan Phillippe might have been keeping a low profile in recent years – but a new photo shared on his Instagram has sparked a major reaction amongst his fans.The Big Sky actor, 46, posted a picture showing him posing in a suit for a mirror selfie inside his bedroom – and it got his followers all saying the same thing.MORE: Reese Witherspoon reveals the naughtiest member of her family WATCH: Reese Witherspoon's children make surprise appearance in fun video"Do you