Vanessa Hudgens' Las Vegas Birthday PartyVanessa Hudgens didn't seem too upset about her recent breakup, partying the night away in Las Vegas to celebrate her 22nd birthday on Saturday. The actress sported a tight minidress for a special dinner at Social House and bash at Pure, which lasted late into the night.

Close friends Ashley Tisdale and Brittany Snow partied with her.

Hudgens danced the night away, before heading back to the Emperor's Suite -- where the boys of 'Hangover' stayed in 2009's hilarious hit film -- shortly after 1AM.

Last week, she and Zac Efron ended their four-year relationship. A source tells Gossip Cop that the split was "amicable," after the stars recognized that their relationship "wasn't going to go further."