Ashley Tisdale, who was seen with Zac Efron at the beach earlier this month, spent her birthday partying in Vegas, baby!
Ash partied at PURE nightclub with her sister Jennifer and fellow Hellcats co-stars.
Not in attendance: Vanessa Hudgens. Wonder if things got awkward between them after she spent alone time with Zac? But she claims to still be friends with her HSM co-star.