Vanessa Hudgens enjoyed a lovely 20th birthday with her boyfriend Zac Efron.

As Zanessa they are now a combined age of ... 41 years young. Zac is a tidy 21.

He arrived at the house of the Disney starlet with a beautiful bouquet of flowers and they headed off for a romantic lunch.

Vanessa spent yesterday at the 2008 Environment Youth Conference at the L.A. Convention Center with HSM co-star Olesya Rulin. Making the world a better place is a good way to turn 20!

HAPPY BIRTHDAY VANESSA!

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