Kailyn Lowry‘s eldest sons have a brand new look perfect for summer. 10-year-old Isaac and six-year-old Lincoln showed off their new hair color on their mom’s Instagram account and story. In the images, which Kailyn and the salon, Gem Beauty Co., shared on June 17, the Teen Mom 2 star and mother-of-three, 28, totally surprised her boys with fun new cuts and colors!