Which Celebrity Had the Best Halloween Costume? Vote!

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Katy Perry and guest dressed as Bill and Hillary Clinton at Kate Hudson's annual Halloween party on Oct. 28, 2016 in Los Angeles.

With Halloween falling on a Monday this year, celebrities had the whole weekend to show off their best costumes.

From Katy Perry's jaw-dropping Hillary Clinton costume to reality star Kylie Jenner's take on Christina Aguilera's iconic look from her "Dirrty" music video and even a few Halloween makeup smart-phone edits, it's hard to choose which one was the best of 2016.

Revisit this year's best celebrity Halloween costumes here, and then make your voice heard by voting for your favorite below!