It could be on the of the biggest nights of her entire acting career, and Vanessa Hudgens is gearing up for the Los Angeles premiere of “High School Musical 3: Senior Year.”

The “Sneakernight” songstress was spotted by the paparazzi meandering around downtown LA earlier tonight, primping her hair and getting some fresh air before heading down to USC’s Gelen Center.

Last night, Miss Hudgens lampooned her on/off-screen boyfriend Zac Efron by sending a video of him in a jr. high play to the Tonight Show with Jay Leno.

After being surprised by the tape (on which he sang the holiday song All I want for Christmas is my Two Front Teeth) Efron joked, "How could you not say that kid was destined to be a star?"

Gossip Girls

Enjoy the pictures of Vanessa Hudgens heading to the HSM3 premiere (October 16).