Model has received injections since she was 22

Sun Meisi had her first cosmetic chin injection in 2009 while modeling for a Beijing-based fashion magazine. She was 22, and that procedure, which lasted less than 10 minutes, made her chin look more prominent.

Over the following week, she heeded the surgeon's advice and was extremely careful to avoid twisting, pinching or allowing someone to punch her chin, which had been injected with hyaluronic acid, a widely used chemical injected to shape the face and fill the wrinkles in micro cosmetic surgeries.

"Otherwise the jellylike material might bring you an awkward chin," she said. "I felt at first like a lab mouse for beauty but it's worth a try. My confidence was up afterward."