Reese Witherspoon son, Deacon, has got some heartbreaking good looks! The Hollywood star posted modelling snapshots to her Instagram Stories marvelling at how fast he's growing up.But what her fans couldn't get over was how much the 16-year-old looks like his dad, Ryan Phillippe, 45.Reese, 44, reposted a photo of her son by famed photographer, Sam Dameshek, the resemblance to her ex-husband was undeniable. MORE: Reese Witherspoon’s unbelievable Instagram photo of daughter Ava has fans