Zac Efron is completely unrecognisable on chat show

What a transformation!

Zac Efron and his co-star, Seth Rogen, dressed up as teenage girls on Jimmy Fallon’s The Tonight Show.

Zac, of course, makes a beautiful teenage girl and this is one party we would definitely want to go to!

Although we’re not sure he got as into it as Seth, they certainly made us laugh.