Zac Efron and cast members attend "17 Again" premiere in L.A.

Cast members Michelle Tractenberg, Zac Efron and Leslie Mann (L-R) attend the movie premiere of the film "17 Again" in Los Angeles April 14, 2009. [Agencies]

Cast member Matthew Perry attends the premiere of the film "17 Again" in Los Angeles April 14, 2009. [Agencies]