Popsugar Entertainment Hilary Duff Hilary Duff Halloween Costume Ideas Why Not Take a Crazy Chance With These Hilary Duff Halloween Costumes? October 19, 2019 by Kelsie Gibson View On One Page Photo 7 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Casper Meets Wendy What to wear: A red onesie and a matching witch hat. Don't forget your trusty wand. How to act: Like a friendly little witch. Previous Next Start Slideshow HalloweenHilary DuffNostalgiaHalloween CostumesHalloween Costumes 2019Pop Culture Halloween CostumesTVMovies