Zac Efron Now and Then

Zac Efron in the May 2009 issue of GQ. (Peggy Sirota)

Ahsley Tisdale, all grown up at the HSM III premiere. (Reuters)

Zac Efron signs autographs at the HSM III premiere (Reuters)

Ashley Tisdale and Vanessa Hudgens hug at the HSM III premiere. (Reuters)

Corbin Bleu and Monique Coleman at the HSM III premiere. (Reuters)

Zac Efron and Vanessa Hudgens are still going strong after working together on three movies in three years. (Reuters)

A poster for High School Musical 3: Senior Year. (Reuters)

The gang promotes High School Musical 2. (Reuters)

Vanessa Hudgens and Zac Efron mug for the cameras for High School Musical 2. (Reuters)

Ashley Tisdale and Vanessa Hudgens get down at a party for the original High School Musical. (Reuters)

Ashley, Vanessa, and Zac hug it out at the premiere of the original High School Musical. Little did they know then that the ride was just beginning! (Reuters)