It's that time of year again, and celebs flocked to parties around the USA to show off their best Halloween costumes.
Here's a roundup of some of our faves...
Katy Perry, Michael Kives and Orlando Bloom dressed up as Hillary Clinton, Bill Clinton and Donald Trump (see the back) respectively, and the results were HILARIOUS.
Kate Hudson even joined the fun in her costume as a Wild West lass, corset and all.
Could her costume be inspired by the new HBO series, West World?
Kylie Jenner brought back Christina Aguilera's 'Drrty' look to perfection...
Zendaya went as a zombie queen, and it's pretty darn creepy.
Jessica Alba and her friend Kelly Sawyer went as Edina and Patsy from Absolutely Fabulous!
Bette Midler delighted Hocus Pocus fans by dressing up as her character Winifred Sanderson!
And Amy Schumer and boyfriend Ben Hanisch geeked out with their Stranger Things costumes - Amy went as Dustin and Ben went as Eleven!