Jennifer Grey

"Jennifer Grey is a good example of how a nose job (rhinoplasty) can dramatically alter one's appearance," says Dr. Youn. "The removal of the bump (dorsal hump) on Grey's nose made her look very different from the 'Baby' character she played in 'Dirty Dancing.'"

That nose was one of Grey's defining features (like Julia Roberts's lips, Cindy Crawford's mole, and David Letterman's gapped teeth).

While her altered appearance didn't stop Grey from winning "Dancing with The Stars," it might have gotten in the way of movie roles.

"I personally think she looks better since it's just a tad smaller," says Dr. Youn. "But the problem is that she doesn't look like she used to."

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