Zac Efron

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

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.

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.