zac efron

He fell ill while filming his new documentary.

Check out how your favorite celebrities have transformed over the years.

From photos of exes to caption mishaps, we've rounded up 25 instances celebrities deleted posts from their Instagram feeds.

These celebrities are sober.

The reactions are... mixed.

From Lady Gaga and Bradley Cooper to Lana Condor and Noah Centineo, these celebrity pairs have chemistry onscreen and off.

What do we think of the actor's new 'fun' hairstyle?

See how Adam Brody, Jesse Bradford, Josh Hartnett and more resident hotties of the '00s have aged since their heyday.

Baywatch continues its advertising campaign with a new set of motion posters to showcase each character that include Dwayne Johnson giving us the finger, Zac Efron getting his tongue stuck to the glass, and Priyanka Chopra being an ice queen.

It has become increasingly apparent that the best thing a revival of a tired ‘80s pop-culture artifact can be is the neo-21 Jump Street, judging by the new trailer for the Dwayne Johnson-fronted Baywatch. The parallels are striking: we’ve got the central odd couple in the Rock’s bombastic beach hero and Zac Efron’s hard-partying young gun, light meta touches about “reviving the brand,” some playful winks to the core goofiness of the source material (the “why does she always look like she’s running in slow motion?” line may be the best of the clip), even a scene where our heroes are dressed down by a furious black cop. You may call it derivative, but I call it a good start.

Jimmy Kimmel Live served up a fresh batch of celebrity-read "Mean Tweets" on Wednesday, with stars including Ryan Gosling, Melissa McCarthy, Zac Efron participating in their own roasting.

Actors get real about what it’s really like to film a sex scene for a movie — and it's usually not as hot as you think.