Zac Efron

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

The reactions are... mixed.

The 'High School Musical' co-stars dated for roughly four years.

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

'Extremely Wicked, Shockingly Evil and Vile' hits Netflix and select theaters May 3.

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?

From Demi Lovato to Daniel Radcliffe, see 25 celebrities who've overcome addiction.

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

'Zac was really determined to do something different from what he’d done before,' says Jackman.