Josh Duhamel & Fergie
"Had an Incredible Halloween with these jokers!" the Transformers star wrote on Instagram.
Molly Sims
"We're ready!"the proud mom shared while showcasing her children's Pottery Barn Kids Halloween costumes.
Jessica Simpson & Eric Johnson
Grease is the word—and costume—that has this Hollywood couple looking great.
Hailey Baldwin
Meet Baldwin Barbie.
Amanda Seyfried
Forget about trick or treating. The actress spends her Halloween night at Horror Nights at Universal Studios Hollywood.
Adrienne Moore, Danielle Brooks, Cynthia Erivo
The Orange Is the New Black actresses and The Color Purple star wowed at Heidi Klum's Halloween party.
Bethenny Frankel
The Real Housewives of New York City star purred as a leopard.
Paris Hilton
The hotel heiress dressed up as Tinkerbell from Peter Pan.
Coco and Ice-T
The reality stars dressed as a referee and convict, respectively, to Heidi Klum's Halloween bash.
Heidi Klum
The German supermodel cloned herself five times (as one does).
Beyoncé, Blue Ivy & Jay Z
Meet Black Barbie and Black Ken.
Mario Lopez
"Familia Lopez is ready to go!" the actor shared while showcasing his children's Pottery Barn Kids costumes.
Brandon Blackstock & Kelly Clarkson
The Huntsman and Buddy the Elf are an unlikely—yet somehow perfect—duo.
Channing Tatum & Jenna Dewan-Tatum
The actress and daughter Everly dressed up as Belle, while the actor morphed into the Beast.
Sarah Michelle Gellar
Don't touch Poison Ivy!
Brad Paisley & Kimberly Williams-Paisley
Did Iron Man find Dorothy Gale in Oz?
Nick Lachey & Vanessa Lachey
The couple (who are expecting Baby No. 3) channeled their favorite Frozen characters.
Lena Dunham
Taking aim at Donald Trump, the Girls creator partied as a "Grabbed Pussy."
James Kennedy & Lisa Vanderpump
The SUR DJ mimicked Jared Leto's Joker while hanging out with his boss at Pump.
Justin Timberlake & Jessica Biel
With Trolls in theaters Friday, is it any surprise Timberlake dressed his wife and kids as Trolls?
Sabrina Carpenter
The Disney Channel actress and Harry Potter fan is ready to take on He Who Must Not Be Named.
Lindsay Lohan
The actress (as Suicide Squad's Harley Quinn) was flanked by two pals.
Shonda Rhimes
The showrunner was inspired by Beyoncé's "Formation" video.
Russell Wilson & Ciara
The parents-to-be got political as Barack Obama and Hillary Clinton.