1. Moaning Myrtle

Harry and Hermione costumes? So 2010. But Moaning Myrtle, that's a classy choice. But, good luck reattaching that toilet seat.
2. Amelia Bedelia X 4

Be prepared to explain that "no indeed, this is NOT a french maid outfit, it is Amelia Bedelia" to those who don't know their kid lit.
3. Madeline

Now if you only had an old house in Paris covered in vines.
4. Olivia

She makes being a pig look good.
5. Greg from Diary of a Wimpy Kid

From the neck down, this costume is a breeze. The head is going to require you break out those paper mâché skills we know you've been hiding.
6. The Bookworm

What do you get when you pair up a green snuggie with glasses and a bowtie? A seriously fabulous bookworm costume.
7. Pippi Longstocking

When was the last time you wore your hair in gravity-defying pigtails? It's time. Extra points if you can scare up a pet monkey from somewhere.
8. Curious George

Has there ever been a cuter parent/child costume? Love it!
9. The Cat in the Hat

It's an oldie but goodie. Every Halloween should have a Cat in the Hat. For a group costume, pull in friends to be Thing 1, Thing 2, Thing 3, Thing 4...
10. If You Give a Mouse a Cookie

Hands down, this is one of the easiest costumes you could ever make at home. We suggest handing out cookies for the win.
11. Emily Elizabeth and Her Big Red Dog, Clifford

Okay fashionistas, this one is for you. If you don't have these items in your closet already, then we just gave you an excuse to go shopping!
12. Little Red Riding Hood

The red cloak seals the deal with this costume. You can pretty much wear any dress underneath. Of course, don't overlook the little details. You still need your basket of goodies for Grandma.
13. The Very Hungry Caterpillar

Here's another genius group costume! Be the caterpillar. Your kids can be different food items the caterpillar eats. HA!
14. Eloise

Style, sass, and LOTS of energy. That's what you'll need to pull off the NYC charm of Eloise. Dog is optional but encouraged.
15. Anne of Green Gables

Keep the classics alive!
16. Mrs. Frizzle from The Magic Schoolbus

Decorating the dress is 90% of the fun with this costume.
17. The Lorax

Speak for the trees. This message is just as important today as it was when the book first came out in 1971.
18. Miss Viola Swamp from Miss Nelson is Missing

Let's be honest; most people can't pull Miss Viola off. But if you can...we bow down to you.
19. I Spy

A WALKING I SPY COSTUME!!! This might be our favorite one yet. Kids or grownups everywhere will love, love, love it.
20. Katniss Everdeen from The Hunger Games

The bow is a must for pictures, but you should leave the arrows at home if this is a school costume.
21. The Gingerbread Man and Woman

Cardboard isn't just for making robot costumes anymore.
22. Sherlock Holmes and Dr. Watson

Be your own Benedict Cumberbatch.
23. Where's Waldo and Wilma?

Stripes, baby. You got this.
24. Captain Underpants

Please, please, please dress up as Captain Underpants. And send us the photos!