A week after Miley Cyrus and her Hannah Montana movie earned record-breaking revenue, Zac Efron is proving that we really are living in a tween world.

The handsome actor has found success with his first post-High School Musical role, as 17 Again finished first at the box office.

The film - which also stars Matthew Perry and Leslie Mann - raked in $24.1, easily knocking off State of Play (featuring Hollywood heavyweights such as Russell Crowe and Ben Affleck), which came in second with $14.1 million.

Way to go, Zac!

Zac Efron, in a scene from 17 Again, has his sights set on true movie stardom.