These Celebs Killed It With Their 2017 Halloween Costumes

Kim Kardashian recreated the Marilyn Monroe-inspired vintage look that Madonna wore to the 1991 Oscars. In order to fully pay homage to Madge's look, Kim recruited her sister Kourtney Kardashian who dressed up as the late pop icon Michael Jackson, who accompanied Madonna to the awards ceremony as her date.

Demi Lovato paid tribute to the late Tejano singer Selena Quintanilla. The pop star absolutely nailed one of Selena's signature looks, which is based on one of the looks that Jennifer Lopez wore while filming the icon's 1997 biopic.

As a former Real Housewives of Beverly Hills star, Brandi Glanville sure knows how to throw shade! When she was invited to her friend's "celebrity scandal couples"-themed Halloween party, she immediately decided to stir the pot by going as her ex-husband Eddie Cibrian and his wife, country singer LeAnn Rhimes. Eddie infamously had an affair with LeAnn in 2009 — while he was still married to Brandi.

Never one to be shy about showing some skin, Modern Family star Ariel Winter decided to go for a scary and sexy couples' look. She and her longtime boyfriend Levi Meaden dressed up as skeletons, and Ariel showed off her round booty in a bodysuit and fishnets.

Adele delighted fans by posting a fun photo of her Halloween look. Fans absolutely loved the over-the-top hair and makeup the singer rocked, but many of them were confused and couldn't figure out exactly who she was supposed to be.

Kim Kardashian kicked off Halloween weekend 2017 by paying homage to her "number one fashion icon" Cher. She perfectly recreated the singer's look that she wore to the1973 Oscars, and Kim's BFF Jonathan Cheban absolutely nailed his look as Cher's ex-husband Sonny Bono.

The busty Teen Mom OG star went for a more risque, sexy look when dressed up as Ariel from Disney's The Little Mermaid, complete with a barely-there seashell bra and a green mermaid skirt.

Michael Jackson's oldest kids made a rare joint appearance together at Prince Jackson's Heal LA And TLK Fusion Present The 2nd Annual Costume For A Cause, which was held at the Jackson family home in Encino, CA. The adorable brother-sister duo had fun together in their costumes, with Paris dressed as a purple dragon and her brother wore a more vague-looking costume which consisted of a full-body black-and-white unitard.

"When your daughter demands you BOTH be ELSA for Halloween…you GRIN AND FORKING BEAR IT," Frozen star Kristen Bell wrote in the caption on Instagram.

Fans were shocked when Modern Family star Sarah Hyland and Bachelor in Paradise star Wells Adams were photographed in a couples' costume dressed as the characters Eleven and Dustin from Netflix's hit sci-fi horror series Stranger Things. According to Us Weekly,, Wells and Sarah have been “seeing each other for months."

English actor Will Poulter, known for his role as Gally in The Maze Runner, dressed up as Sid from Toy Story and even though he had an uncanny resemblance to the character, Will used his costume as a way to raise awareness about bullying and share a message about anti-bullying.

Jessica is always coming up with really fun, creative Halloween costumes and since she is currently pregnant with her third child — a baby boy! — she found a way to incorporate her baby bump into this year's costume. The 36-year-old dressed up as Ellen Page's pregnant character Juno MacGuff, and Jessica's bestie Kelly Sawyer dressed as Michael Cera's character, Juno's boyfriend Paulie Bleeker.

Fans always look forward to the How I Met Your Mother star and his adorable family of four's themed costumes every year, and they did not disappoint! They dressed as the creepy characters from American Horror Story: Freak Show and somehow they were able to make it look adorable.

Demi Lovato showed off her toned booty in this sexy cop costume.

The adorable family loves each other to infinity and beyond! Justin dressed up as Buzz Lightyear, his wife Jessica Biel dressed as Jessie, and their two-year-old son Silas dressed as Woody.