To expand a bit, it is "Dr. Vu's Automated Cosmetic Surgeon" and is a career reward attached to the Show Business career.
The item came along with the University pack. There are some buyable versions out there, but whether or not they will show up or function if you do not have Uni installed I cannot say for sure.
Some other options:
Either Insimenator of SimBlender can do the exact same thing insofar as changing appearance is concerned, regardless of what EPs/SPs you may have installed.
TwoJeffs has a variety of Buyable Career Rewards hacks at Simbology. Pick the one that best matches your EP configuration from the TJ's Sims2 Downloads section:
http://www.simbology.com/smf/index.php?PHPSESSID=e2aef2786dc1fba2eb96584e66c1eb77&#c1If you have Nightlife installed, you can use a single cheat:
unlockCareerRewards
to get access by a selected Sim to all the career rewards available in your game configuration. For example, if you don't have Uni, then the Dr. Vu's reward will not be available via the cheat, as it just won't be present in the game to be unlocked.