The Best Celebrity Halloween Costumes of 2017Kayleigh Roberts & Alyssa Bailey & Amy MackeldenSun, October 29, 2017 at 7:28 PM UTCChanning Tatum as a unicorn, Jason Derulo as Night King, and more.Same look, different night.Instagram+AdeleInstagramInstagramInstagramInstagram+zoekravitzInstagram+lenadunhamInstagram+Busy PhilippsSnapchat/kimkardashian1 of 32Channing Tatum as a unicorn, Jason Derulo as Night King, and more.1 of 32Channing Tatum as a unicorn, Jason Derulo as Night King, and more.Demi and Kim Both Dress Like Selena for Halloween2 of 32Same look, different night.Emily Ratajkowski3 of 32Karlie Kloss4 of 32Paris Hilton5 of 32Adele6 of 32Instagram+AdeleLauren Conrad7 of 32InstagramIsla Fisher8 of 32InstagramKarlie Kloss9 of 32InstagramSarah Paulson and Holland Taylor10 of 32Zo? Kravitz and Karl Glusman11 of 32Instagram+zoekravitzLena Dunham12 of 32Instagram+lenadunhamBusy Philipps13 of 32Instagram+Busy PhilippsKourtney and Kim Kardashian14 of 32Snapchat/kimkardashianKim Kardashian West15 of 32Amal Clooney16 of 32Jaime King17 of 32Joe Keery18 of 32Bella Thorne19 of 32Lauren Conrad20 of 32Vanessa Hudgens21 of 32Rowan Blanchard22 of 32Jason Derulo, middle, as Night King23 of 32Jenna Dewan Tatum24 of 32Channing Tatum25 of 32Aubrey Anderson-Emmons26 of 32Sarah Michelle Gellar27 of 32Jordana Brewster with her sons28 of 32Gwyneth Paltrow (not in a costume), Jessica Seinfeld, and Jerry Seinfeld29 of 32Joana Krupa30 of 32Chanel West Coast31 of 32Tara Reid32 of 32Channing Tatum as a unicorn, Jason Derulo as Night King, and more.From ELLEAbout Our Ads