Plastic surgery doesn't always turn out the way people want it to -- and that's true for celebrities as well as the rest of us.
We took a look at 14 celebrities and asked plastic surgeon Dr. Anthony Youn, who writes the popular Celeb Cosmetic Surgery blog, to share his thoughts.
> View Before & After Plastic Surgery Photos
For example, 24-year-old Heidi Montag. "She underwent 10 cosmetic surgeries in one day... and now she looks less like a person and more like a Barbie doll," says Dr. Youn.
"In my opinion, none of these ten plastic surgeries have benefited her except in giving her more publicity and more reasons to do more surgery," says Youn.
The reality star admitted to having a mini brow lift, botox in her forehead, a nose job revision, fat injections in her cheeks, a chin reduction, neck liposuction, ears pinned back, second breast augmentation, liposuction on waist, hips and inner thighs, and a buttock augmentation.
"This troubled fame addict needs a shrink, not a plastic surgeon!" says Youn.
Montag herself has since called the surgeries a mistake.
"People have fewer scars from car accidents than I have on my body," she told Life & Style Weekly.