View the Gallery / 26 Photos »

High School Musical stars, Vanessa Hudgens, looked all kinds of grown up to celebrate her 21st birthday with boyfriend, Zac Efron. The vivacious Disney channel star showed off her shapely legs in a black mini-dress and black stilettos and leather bomber jacket. I have to say, the way she maneuvers those stairs in those heels is quite impressive.

Zac was his usual fashionable, yet casual self in a pair of jeans, leather boots and jacket. The Me and Orson Welles star gallantly offered his arm to his glamorous girlfriend so she could make her grand exit from EAST Restaurant and Bar in North Hollywood in style.

It was a very low-key, private affair with HSM star, Ashley Tisdale, also in attendance with her boyfriend, Scott Speer. All in all, it looks like quite the classy affair.

Gallery Info: Vanessa Hudgens and boyfriend Zac Efron celebrate her 21st birthday with dinner out at EAST restaurant and bar with Selena Gomez, Ashley Tisdale and her boyfriend, Scott Speer.