You can choose a Halloween costume from a show like Game of Thrones character or a movie like Star Wars. It's easy to dress up like a Wizard of Oz character for Halloween.

However, Glinda's iconic pink costume does easily draw connections to The Wizard of Oz, potentially setting up her transformation into the Good Witch and using this as the crux of her character arc.

Lions and tigers and Oz movies, oh my! With the recent release of Disney’s “Oz the Great and Powerful” and the expected release this year from Summertime Entertainment of the anim… ...

She wore a pink Glinda dress covered in stars for her "Wizard of Oz"-themed fourth birthday party in May. "We're huge 'Wizard of Oz' fans," said Katie Belot, Caroline's mom. "She just loves the movie.