Who doesn't want to go crazy with glitter on Halloween -- it's really the only time you can get away with it. Transform yourself into a glittery fairy with these step-by-step instructions courtesy of Gregory Arlt, Director of Makeup Artistry for MAC cosmetics. Pair this girly makeup look with a set of wings and soft curls to complete the look.

Take this go-to look to the next level by following this makeup how-to

Instead of reaching for some awful costume-in-a-bag because you put off deciding what to be this Halloween, quickly transform your look by creating this painted on bat-shaped, glittery mask. Follow these step-by-step instructions courtesy of Genoa Norris, Resident Trainer at MAC Cosmetics and you'll have a costume in no time. Pair this mask with all black clothes and a sleek ponytail for a complete (and super simple!) look.

We teamed up with Gregory Arlt, director of makeup artistry for MAC cosmetics, to show you how to create this classic Twiggy look. It's easy if you follow these step-by-step instructions. For a complete look, pair this dramatic makeup with a wide headband and '60s-style turtleneck dress.

David and Victoria Beckham will be the couple costume of the year. Follow these step-by-step instructions from one of Victoria's makeup artists, Director of Makeup Artistry for MAC Cosmetics Gregory Arlt, and learn how to recreate her signature makeup look. Pair this with a Posh-like wig and you're set.