Help spur your child's inner scientist with an adorable Ada Twist Scientist costume, complete with goggles, rubber gloves, and a polka dot dress -- all things you probably already have!
This adorable green sheep costume, from Where Is The Green Sheep, is a fun and creative choice (especially if you've got a few hundred cotton balls lying around).
Raising a feminist who likes to fight her own battles? The Paper Bag Princess is a great book, and makes for a adorable (and super easy!) book character costume.
Photo: Seeker of Happiness
Fancy Nancy books are rated pretty highly in my house, and Nancy's wild wardrobe lends itself to a pretty fantastic book character costume, with lots of room for creativity.
Photo: Five Brothers One Sister
The Man in the Yellow Hat from the Curious George series will make an especially bright and cheery (and recognizable) book character costume.
Photo: Haute Apple Pie
The great thing about The Cat In The Hat is that it can be the perfect costume for either a boy or a girl, and everyone loves Dr. Seuss.
Photo: Costume Works
With countless Arthur books out there, this bespectacled aardvark would make for a great book character costume.
Photo: Deviant Art