If you have not already done so, it is time to think about your Halloween costume for this year. Choosing the right costume to generate fun and excitement takes some time shopping around. Teenage boys and especially girls take plenty of time to decide what they want to be this Halloween. Here are some fun Halloween Costume ideas based on TV and movies from Hollywood for teenage boys and girls.Disney princesses and pirates are top sellers at the Disney Store, with new Cinderella, Ariel and "Pirates of the Caribbean" costumes. But this year, it's all about the tweens, with popular costumes including "Hannah Montana," "Camp Rock" and "High School Musical." Kids are watching these shows every day on the Disney Channel and they want to be Hannah Montana.It's the year of Star Wars at Toys "R" Us, with several costumes coming from characters in "The Clone Wars.

Besides superheroes like Batman, Spider-Man and the Hulk, a Power Ranger, Indiana Jones and Transformers are popular. Girls are choosing Supergirl and Batgirl, along with fairies and princesses. Perennial top sellers include witches, skeletons and ninjas.

1. Halo 3 Master Chief Deluxe Teen Costume

This Halloween costume represents Master Chief, Spartan 117, the hero from the Xbox 360 game Halo 3. Come alive as this cybernetic super soldier. Join the ranks of the Mythical Spartan-IIs!

Created for the Spartan Project, the Mark IV MJOLNIR armor system provides the wearer with a variety of tools useful for the defense of Earth. Help protect humanity this Halloween! The Halo 3 Deluxe Adult Costume includes: A black jumpsuit with EVA molded armor. Armor includes: Gauntlets, Chest and Shin Guards, and Cod piece. A two-piece helmet is also included to complete this battle ready ensemble. Gloves, boot tops and shoes will make great accessories for this popular halloween costume. This is an officially licensed Halo 3 costume.

So she's not the lead, she's still loved by many!

Push your way to the top! This High School Musical inspired Sharpay Deluxe Costume includes a gorgeous, pastel blue dress. A brooch and headpiece are also included to authenticate Sharpay's signature style!

Headset microphone and shoes will make great accessories.

Team with the other Disney movie inspired looks for an awesome group theme straight from your favorite musical! This is an officially licensed Disney High School Musical costume. If you don't have kids and you don't know too many people with kids, you may not recognize the cultural significance of the little girls and a few little boys who will inevitably show up at your door in Walt Disney-licensed "High School Musical" costumes. Options include a deluxe maroon cheerleader costume with the letters "E.H.S." across the front ($30), a blue Sharpay dress with headset ($35), and Troy's warm-up outfit with microphone and inflatable basketball ($35).

Elegance, extravagance, and exquisiteness.

Bring Marie Antoinette's style and grace back from the 18th century this Halloween! Wrap yourself in ivory and pink brocade - the Marie Antoinette costume features a brocade top and peplum with a ruffle trim, a square neckline, bow embellishments, and a show-stopping pink metallic skirt. A matching hat is the included accoutrement that completes this enchanting ensemble.

It's been more than a year since Sofia Coppola's stylish film about pretty ladies in high, powdered wigs, but the costume is the perfect mix of pretty and over the top and so it has lingered in popularity. Daniel Hazen, owner of Ozzie Dots on Hollywood Boulevard, says his store hasn't been able to keep the wigs in stock. The more "sexy" version of the costume - thigh high-stockings included - is an especially big seller at $240.

Buyers of Ugly Betty costumes this year made it one of the top selling Halloween costumes based on a Hollywood TV serial. There's not really a costume made up and customers can buy teeth with braces, a pair of thick glasses and a frumpy wig. The rest of the stuff they either find at a thrift store, or a ‘60s kind of costume - basically stuff that doesn't match.

You can make the ultimate and bold anti-fashion statement with the brilliant red Guadalajara! Poncho, featuring the blue and yellow Guadalajara! print on the front, and the famous palm tree, cactus and man in sombrero on the back. Trimmed with blue fringe and a blue neck tie, this poncho is the proverbial cape that makes you the unlikely super-heroine that you are!

To give yourself a full-on Ugly Betty look, please be sure to add glasses, false braces, and wigs.

This sexy superhero is sure to stop the bad guys in their tracks!

Barbara Gordon is one hot babe! Deluxe costume includes black mini dress with yellow bat logo, attached black cape, glovelets, black character eyemask (may differ slightly from shown), yellow vinyl belt, and black boot tops.

It's the best of both worlds - glitz AND glamour!

Whether you're doing the "Bone Dance" in class or setting trends that put your face on all the magazine covers, the Gold Hannah Montana costume is going to make you a trend-setter! It includes: A gold metallic jacket with the Hannah Montana logo, a matching tunic top, black cropped leggings, a glittery belt, and Hannah's signature wig! This star-studded ensemble comes complete with everything you'll need to transform yourself into a rockstar!

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