Zac Efron

He was hospitalized on Friday (Aug. 2).

Long live 'Tiger Beat' and 'Bop' magazine.

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

The 'High School Musical' heartthrob looks a little different, according to these tweets.

A new Charlize Theron movie, a Zac Efron travel series, and an ‘Unsolved Mysteries’ update are all on the way.

Kelly is joined by Zac Efron, Missy Elliott, Shia LaBeouf and more.

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

He fell ill while filming his new documentary.

Zac was flown to Australia for treatment.

See how your favorite celebrities have transformed since they first made it big.

These celebrities are sober.

From pop stars to sports stars, check out 20 celebrities who embrace the vegan lifestyle.