Ashley Tisdale: From ‘High School Musical’ to ‘Hellcats’

Ashley Tisdale is going back to school—and this time she’s bringing her pom-poms!

Tisdale—who brought the character of Sharpay Evans to life with antagonistic zeal in High School Musical—is now tackling the cutthroat world of college cheerleading in her new series, Hellcats (which premieres on Wednesday, September 8 at 9 PM/8 Central on The CW). The Tiz will be playing Hellcats squad captain Savannah Munroe, who juggles various personality conflicts as she attempts to lead the squad to the cheerleading championship.

As the 25-year-old thespian embarks on the next leg of her acting career, let’s look back at her accomplishments thus far in our big, big photo gallery chronicling The Evolution of Ashley Tisdale, from promising young Disney starlet to full-blown sensation.