Halloween only happens once a year. That's why it is also important to look your best when it's time for trick or treat. But how can you look your best when you are dressed up like a monster? By wearing the sexy Halloween costumes of BuyCostume.com of course. We've got some of the hottest affordable Halloween costumes listed below.

Edward Scissorhands - Miss Scissorhands Adult Costume

Price: $39.49

Applicable Coupons for BuyCostumes: 25% off on costumes

Get to look like the bride of Edward Scissorhands in the Miss Scissorhands Adult Costume. The outfit is composed of black leather, attached sleeves, and gloves complete with faux scissors. The Miss Scissorhands costume also comes with a wig with wild curls, a choker necklace and a faux black leather belt. Cut your way into the hearts of many with the Miss Scissorhands Adult costume from BuyCostume.com.

Dark Red Riding Hood Adult Costume

Price: $59.99

Applicable Coupons for BuyCostumes: 25% off on costumes; 10% off on purchases above $60

It's not going to be the big bad wolf on the prowl this Halloween. At BuyCostume, Red Riding Hood becomes all grown up and shows her dark side too! This hot Dark Red Riding Hood Adult Costume is composed of a stunning blood-red dress, a lace-up bodice and a rosebud embellishment. It is topped off with a red-hooded coat and a red-checkered basket. Red Riding Hood would definitely put the big bad wolf to shame.

Poison Ivy Costume

Price: $58.99

Applicable Coupons for BuyCostumes: 25% off on costumes

Villains are in during Halloween and no villain is hotter in the Batman universe than Poison Ivy. Seduce anyone you meet in Halloween with this Poison Ivy costume brought to you by BuyCostume.com. The costume is a sexy faux suede jade mini-dress with a back zipper closure, ivy embellishments and a lime green trim. Included in the Poison Ivy outfit is an Ivy headpiece, gloves and an ivy boa.

Melody Monster Adult Costume

Price: $66.99

Applicable Coupons for BuyCostumes: 25% off on costumes; 10% off on purchases above $60

Normally, monsters are gross, ugly and viscous. However, there are times that they are cute, cuddly and sexy. Check out the Melody Monster Adult Costume and you'll see what we're talking about. It makes the one wearing the costume very sexy and oh-so cute! The outfit consists of a polka dot dress with a lime green fur accent. It also comes with a furry monster hood with cute eyes and large teeth.

For more of these sexy Halloween costumes, visit BuyCostume.com.