Have you seen Bristol Palin lately? She's definitely looking "refreshed" and younger. When you look at the above before and after photos, it's hard to believe that she didn't have any work done to her face.

Read From Heidi's Boobs to Lisa's Lips: Celebrity Plastic Surgery Gone Bad

Bristol appears to have lost a significant amount of weight, which is responsible for some of the differences in her look. In addition, she seems to have had liposuction of her entire neck with a focus under her chin which has produced a much more defined jawline and lower facial area. She may have also had a chin implant to better define this area. Her lower lip appears much more full and it is likely she had injections of Juvederm into her lower lip.

Tell us: Do you think she had multiple procuedures done, or it's just nature?

Brian S. Glatt, MD, FACS is a premier, board certified plastic surgeon serving the New Jersey and New York Metropolitan Area.