The star of High School Musical Ashley Tisdale celebrated her birthday yesterday with a vacation in Hawaii. Exactly one year older than Lindsay Lohan, the Tis opted to head out of Hollywood for her bash, while LiLo stayed in town and had a dinner out with special friend Samantha Ronson.

The Disney Channel actress had more to celebrate than turning 23 and being in good health. Her budding romance with HSM dancer Jared Murillo was clearly in full bloom on her tropical getaway, as the couple engaged in full-on beach frolicking.

Why should Zac Efron and Vanessa Hudgens get all the attention?