Kim Kardashian and Jonathan Cheban Are Sonny and Cher for Halloween

They had a blast lip-synching songs at the '70s-themed Casamigos Halloween Party, also attended by Amal Clooney

By Corinne Heller, Alli Rosenbloom Oct 28, 2017 4:40 PMTags

When Kim Kardashian needed a friend to help her with her Halloween costume, Jonathan Cheban was like, "I got you babe!"

He and the Keeping Up With the Kardashians star dressed up as the late Sonny Bono and pop superstar Cher for the 2017 Casamigos Halloween Party. Kim wore a yellow, long sleeve, bohemian-style crop top and flared pants with sparkling embellishments. Jonathan wore a wig and fake mustache and plum checkered tux. She also sported a long, dark brown wig—similar to her own natural hair—over her platinum blond locks.

The real Cher was very impressed with Kim and Jonathan's tribute.

"@KimKardashian Woke To See You Are Me 4...You Look BEAUTIFUL Little Armenian Sister," she tweeted. "Dream Of India Is Perfect 4U & @BobMackie at his best."

Kim seemed relaxed and in a great mood at the party, E! News has learned. She chatted with model Kelly Sawyer, who was dressed as a cheerleader, as well as other pals. After a few minutes outside, Kim and Cheban linked arms and walked inside the party, did a small lap and left, E! News has learned.

They later had a blast filming Snapchat videos of themselves lip-synching the former couple's 1965 hit "I Got You Babe" and Cher's 1998 dance song "Believe." 

Iconic Halloween Costume Items You Can Wear Again IRL
Neilson Barnard/Getty Images for Casamigos Tequila
Ron Galella/WireImage

The Casamigos Halloween party is an annual bash thrown by the company owned by George Clooney and Rande Gerber. The latter attended Friday's event, which had a '70s disco theme, with wife Cindy Crawford, George's wife Amal Clooney and kids Kaia Gerber and Presley Gerber, who brought friends with them. Amal and the Gerber family wore '70s-style outfits. Amal sported a strapless, sparkling blue jumpsuit, large hoop earrings and round sunglasses and a large, afro-style curly wig.

Amal hung out with Cindy in a booth, had fun dancing to the disco music playlist and drank a Casamigos cocktail.

See photos of famous guests at the party as well as pics of other celebs celebrating Halloween 2017.

Ariel Winter

The Modern Family star celebrates Halloween week at The Queen Mary's Dark Harbor in Long Beach, California.

January Jones

"Rapunzel selfie for the win/lose," the actress shared on Instagram while dressed as Disney's Rapunzel.

Kendall Jenner

The Keeping Up With the Kardashians star dresses up like a Powerpuff Girl in her custom Bryan Hearns design. 

John Legend

"Happy Halloween! #copacabana," the "All of Me" singer shared on Instagram while posing with Chrissy Teigen. 

Heidi Klum

Ready for Halloween? The Project Runway judge performs Michael Jackson's "Thriller" during her 18th Annual Halloween Party sponsored by SVEDKA Vodka at Magic Hour Rooftop Bar and Lounge at Moxy Times Square.


"Happy Halloween from the crazy people #piratelife," the singer shared with her family. 

Maci Bookout

"Happy Halloween from Woody, Jessie, Ken, Barbie, and BeastMode!" the Teen Mom O.G. star shared on Instagram before trick-or-treating. 

Jessica Simpson & Eric Johnson

Hot damn! The husband and wife make quite a splash as Willie Nelson and Waylon Jennings.

Justin Timberlake & Jessica Biel

"If you see us in these streets then have your candy ready! Trick-Or-Treat, little homies!" the pop star wrote on social media, signing the note "Woody, Jesse, and Buzz."

Halsey & G-Eazy

The cute couple enjoy a cuddle during her 2nd Annual Halloween Party presented by Freixenet Cava.


The newly single pop star steps out for trick or treating with her little boy Axl

Jessica Alba & Cash Warren

The Alba family vants to suck your blood!

Ariel Winter and Levi Meaden

The two dress up as Leeloo and Korben Dallas from The 5th Element.

Emma Roberts & Evan Peters

No American Horror Story here! This couple makes for picture perfect witches.

Wiz Khalifa

"Wiz' World," the rapper shared on Instagram before celebrating Halloween at TAO LA and Avenue. 

Sarah Michelle Gellar & Freddie Prinze Jr.

"Happy Halloween everyone!" the actor captioned this photo. "Eat your heart out John Cryer! Next year ... Maxwell Houser makes an appearance."

Jessie James Decker

The pregnant country singer and E! reality star holds her very own Mickey Mouse close. 

Gisele Bündchen & Tom Brady

Millennials rejoice—the supermodel is the toast to the NFL star's avocado. 

Khloe Kardashian & Tristan Thompson

Mother of dragons! The E! reality star and her basketball playing beau go as their favorite characters from Game of Thrones

Carrie Underwood & Mike Fisher

"The only deer I am OK with @mfisher1212 'catching!'" the country singer captioned the couples shot. "@catchindeers #HelpMe #happyhalloween #veganwifeproblems"

Ryan Lochte & Kayla Rae Reid

It's a whole new world for this Olympic gold medalist and wife who wear costumes from Yandy.com

Kendra Wilkinson-Baskett & Hank Baskett

Trick or treat says this famous family!

Natalie Dormer

Yo ho, yo ho, it's a pirate's life for this actress!

Matt Lauer & Savannah Guthrie

Dolly Parton and Kenny Rogers, is that you?!

Amber Rose & Sebastian Taylor Thomaz

"Chucky ❤️'s Tiffany FOREVER!!!!" the social media sensation shared on Instagram. 

Tony Goldwyn, Kerry Washington & Bellamy Young

The cast of Scandal goes all out for Halloween.

Colton Haynes & Jeff Leatham

Cheers! An unrecognizable Colton enjoys some Freixenet Cava while partying with his hubby at Frexienet's 2nd Annual Black Magic Affair.

Dream Kardashian

Rob Kardashian and Blac Chyna's almost 1-year-old tot is a picture perfect Raggedy Ann!

Nicole Scherzinger

Walk like an Egyptian!

Vanessa & Stella Hudgens

Skeleton sisters! "Nothing better than Halloween decorations, a chai latte, skeleton onesie and mi sister," she captioned this image while wearing PrettyLittleThing skeleton onesies.

View More Photos From Stars Celebrate Halloween 2017

Shannen Doherty was spotted with husband Kurt Iswarienko. The actress, who recently battled breast cancer, looked fab in a short black bob wig, fishnet tights, short denim shorts and a black top and was laughing and smiling. 

Other celebrity guests included Buffy the Vampire Slayer and Gossip Girl alum Michelle TrachtenbergCourtney LoveMolly Sims and husband Scott StuberJon HammDavid SpadeRachel ZoeRachel RoySeth MacFarlaneSacha Baron Cohen (a yellow smiley face emoji) and wife Isla Fisher (a unicorn), Alessandra AmbrosioDerek Hough (teddy bear) and girlfriend Hayley Erbert (Wonder Woman), Russell Simmons and Adrien Brody—who dressed up as a panda!