This adorable 6-year-old was born with an ear that never developed. Mattie Cliiburn is teased by kids and her hearing is muffled, but all that is about to change. Los Angeles plastic surgeon Dr. Sheryl Lewin was able to give Mattie a 3D-printed ear. First, the 3D model was built using a mirror image of her other ear, then the doctor explained to Mattie how a skin graft will make her ear look. Mattie also got a hearing aid implant. The surgery took nine hours, and was a success!