Zac Efron

It's no surprise Jennifer Aniston's hair — a.k.a. "The Rachel" — made the list.

The awards had received major criticism for that choice.

One student thought Jesse McCartney was Justin Bieber!

Because breaking up is hard to do.

After 50 years, this was supposed to be Scooby-Doo’s first animated feature on the big screen.

Zac could be the next Captain Jack Sparrow.

Zac was flown to Australia for treatment.

From Nick Jonas to Khloe Kardashian and beyond, check out 30 surprising celebrity glow-ups over the years.

Some of these transformations will make your head spin — or at least give you a laugh.