Willie Geist
The audience was all shook up when Willie hit the stage as Elvis Presley.
Craig Melvin
The broadcaster channeled his inner champ when he dressed up as Muhammad Ali.
Jenna Bush Hager
The Today host show proved she could bring out her in powerhouse as the legendary Celine Dion. And that's the way it is.
Peter Alexander & Kristen Welker
Peter and Kristen said "yes" to channeling newlywed couple Jennifer Lopez and Ben Alffeck for Halloween.
Carson Daly
The TV host dressed up as legendary magician David Copperfield.
Dylan Dreyer
The meteorologist surely brought the magic when she dressed up as Adelaide Herrmann.
Al Roker
The weatherman impressed viewers when he hit the stage as Sammy Davis Jr.
Donald Faison's Daughter Wilder
The 7-year-old paid homage to her dad's 1995 movie Clueless and channeled Stacey Dash's character Dionne Davenport for her Halloween costume.
Lil Nas X
The Grammy winner attends Shaun Ross' Alien Superstar Halloween party at Sunset at EDITION.
Scheana Shay
"Monsters Inc. & Boo," the Vanderpump Rules star wrote on Instagram.
Tyga
The hip-hop artist is ready to party at Unruly's 3rd Annual Halloween Party with Moonpay and Limitless.
Kelly Rowland
The singer appears as Catwoman.
True Thompson
"Owlette and Tigger aka True and Baby Brother," Khloe Kardashian wrote on Instagram as her son wore a costume from Pottery Barn Kids.
Camila Mendes, Lili Reinhart & Madelaine Petsch
The Riverdale actresses appear as the Sanderson sisters from Hocus Pocus.
Khloe Kardashian
The Kardashians star celebrates the spooky holiday with True Thompson, who was spotted wearing Hanna Andersson's spooky smiles PJ set.
Anderson .Paak
The Grammy winner's alter ego DJ Pee .Wee attends the Starchild Rooftop Bar & Lounge opening party at CIVILIAN Hotel.
Ella Balinska
The Resident Evil actress appears at Darren Dzienciol's CARN*EVIL Halloween party at a private home in Bel-Air, Los Angeles.
Taylor Lautner
The Twilight alum attends the Casamigos Halloween party.
Mark Ronson & Grace Gummer
The Hollywood couple celebrates Halloween at The BOOM BOOM Room at The Standard, High Line.
Alessandra Ambrosio
The former Victoria's Secret Angel hosts Darren Dzienciol's CARN*EVIL Halloween party at a private home in Bel-Air, Los Angeles.
Chace Crawford
The Boys actor attends Darren Dzienciol's CARN*EVIL Halloween party at a private home in Bel-Air, Los Angeles.
Becky G
The star appears at Darren Dzienciol's CARN*EVIL Halloween party at a private home in Bel-Air, Los Angeles.
Kendall Jenner
The model will make you never look at Toy Story's Jessie the same way again.
Miranda Kerr & Evan Spiegel
The married couple dress up as Batman and Catwoman.