Perry to play old Zac Efron
Zac Efron and Matthew Perry have signed up to appear in comedy film 17, New Line's teen comedy being directed by Burr Steers.
The movie tells the story of a middle-aged dad who wakes up to find himself aged 17 again.
The father then decides to enrol at his children's school so he can keep an eye on them.
Perry will play the father, with High School Musical star Efron playing the younger, 17-year-old version.
Actress Leslie Mann will play Perry's onscreen wife.

Perry recently starred on NBC's "Studio 60 on the Sunset Strip" and will be seen on the big screen in "The Laws of Motion," an indie drama that also stars Ginnifer Goodwin, Hilary Swank and Ben Foster.
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