Many of your favorite celebrities spend their days on set and in costume, but they still love to dress up for Halloween!

This year, Ashley Greene is hanging up her fangs and putting on feathers. When Vanity Fair asked the New Moon star if she had a costume yet, she replied, "Yes! I can't tell you what it is yet ... O.K., I'm going to be a bird!"

Another celeb who won't be riding the vampire train is Chelsea Hobbs. "I've been a vampire for Halloween every year for the last 6 years and this new trend has ruined it for me," she tweeted. "Guess I'll put the fangs away :("

Just yesterday, Chelsea still had yet to choose a costume, but she assured her fans (via Twitter) that she'll pick something soon: "Ok so I loved all of ur suggestions for Halloween and am gonna make myself figure it out today. I am REALLY good at last min."

Maybe Chelsea can work with what she rocked on October 25. She and her Make It Or Break It co-stars -- Cassie Scerbo, Josie Loren, and Ayla Kell -- all showed up wearing cat ears to the Camp Ronald McDonald For Good Times' 17th Annual Halloween Carnival at Universal Studios Hollywood.

Vanessa Hudgens and Aly Michalka talk Bandslam in these exclusive behind-the-scenes look from the movie - out in theaters today!

In the four clips, the girls reveal secrets about the making of the movie, like how they recreated the famous CBGB club in New York and that most of the movie was filmed during SXSW in Austin, Texas.

These clips are all about the music and if they're not enough to make you want to see the movie (what's wrong with you?), don't forget about the new trailer for New Moon playing during the previews. Click here to watch a sneak peak of the trailer!

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Click 'Read more' to see two more exclusive clips about Bandslam!

Check out this music video from Bandslam featuring Vanessa Hudgens as Sa5m (the 5 is silent) performing the song Everything I Own. She's also playing the guitar!

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The movie hits theaters August 14th, but we got to see the movie and chat with the stars including Vanessa, Aly Michalka and Gaelan Connell. Click here to watch the interview.

Are you ready to rock? Then get ready for Bandslam! Aly Michalka, Vanessa Hudgens, Gaelan Connell and Lisa Kudrow star in this hilarious coming-of-age film that mixes humor and awesome indie rock into a movie that everyone can relate to!

Aly (from Aly and AJ) plays Charlotte, a once-popular cheerleader who decides to throw away her "cool girl" status and start a band with the, well, less desirable kids in school. She enlists the new guy in town, Will Burton (Gaelan) to manage them and take them to a whole new level for Jersey's biggest musical competition, "Bandslam."

You'll also see a whole new side of Vanessa who plays Sa5m (the '5' is silent), Will's classmate and crush, a quiet girl who would prefer to read books than run for prom queen. A far cry from Gabriella!

We talked to the cast about what makes Bandslam so special and how Gaelan felt about kissing both Aly and Vanessa in the film! The movie hits theaters on August 14. Check it out!

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