Celebrities Who Dressed Up as Other Celebrities for Halloween

Remember when Kim Kardashian dressed up as herself?

cher kim kardashian halloween 2017
(Image credit: Getty Images/Neilson Barnard)

If there's one thing that Halloween in Hollywood has taught us, it's that celebrities like to go all out for the holiday. As for their go-to costume inspiration? Naturally, each other. Ahead, we rounded up the best celeb-on-celeb costume ensembles. You're going to want to take notes.