Pop singer Charice Pempengo is the most recent young celebrity get some work done.

The 18-year-old up-and-coming pop star had undergone a "30-minute Thermage skin-tightening procedure and Botox" to slim down her naturally round face last week. According to Popeater, Charice went through the procedure in order to prepare for her upcoming role on "Glee."

While, yes, celebrities are expected to look their best, it seems to us that more young starlets than ever are going under the knife. After the jump, a list of A-listers who've "had work done" while still baby-faced, some before they were even old enough to drink.

Check this list, then tell us, should plastic surgery for the underage be outlawed, or would that just create (shudder) a black market for boob jobs?

LiLo's little sister, Ali Lohan, has also been rumored to have plumped up her kisser with a lip enhancement, and she's only sweet 16.


Hilary Duff capped her teeth with veneers when she was 18.


Both "High School Musical" alum Ashley Tisdale and singer/actress Ashlee Simpson-Wentz had nose jobs at 22.


In 2006, Jessica Simpson, who was 25 at the time, admitted to getting Restalyne for fuller lips, but she reportedly "regrets" the injections.


In the mid-2000s, actress and resident party girl Tara Reid was the poster child for plastic surgery gone
bad. A boob job and liposuction left her with scars and a disfigured body at 29.
Now Heidi Montag trumps Reid as the plastic surgery queen. With 10 different cosmetic procedures done (and perhaps a few more in the future), this "Hills" starlet has transformed from natural beach body to a real-life Barbie. Starting when she was 21, Montag has gotten everything from fat injections in her cheeks to neck lipo. (What?!)


They're still young -- though they don't seem to realize it -- but do you think these stars have already gone too far with "improving" their looks?

(All photos courtesy of Getty Images.)