Amelia Dimoldenberg went as the original office siren, Roz, from Monsters Inc. this Halloween.

Chlöe Bailey “presented” herself to her fans as a flamboyant Jessica Rabbit in an Instagram picture she shared on Wednesday (October 30).

The 26-year-old singer stunned in a glittery red gown, purple gloves, and a red wig, embodying the fictional character from the novel Who Censored Roger Rabbit? and its film adaptation.

M. Night Shyamalan threw an epic Halloween party in Philadelphia, USA, on Saturday (October 26), The Daily Mail reported on Sunday (October 27).

The 54-year-old The Sixth Sense director dressed as the Joker for his “Shyamaween” bash, as per The Mail.

Lizzo served up some sass and satire this Halloween, giving South Park a dose of their own medicine, Bored Panda previously reported.

The 36-year-old singer took to Instagram to share a series of posts, featuring herself wearing a fictitious weight-loss drug named “Lizzo.”

The four-time Grammy Award winner went all in, sharing pics of herself wrapped in a faux FDA-approved box, with “diet suppressor” written on the label.

Jennifer Garner went as her iconic character, Jenna Rink, from her 2004 romcom13 Going on 30.

Macaulay Culkin dressed up as what many claim is his doppelgänger. For Halloween, the Home Alone star embodied Joe Burrow, the NFL quarterback for the Cincinnati Bengals.

Ice Spice radiated as Leeloo from the 1997 film The Fifth Element, directed by Luc Besson. The 24-year-old singer sported the over-the-top outfit made famous by Milla Jovovich.

Jennifer Hudson channeled The Queen of the Night for Halloween this year, a persona made famous by Whitney Houston in The Bodyguard and her song of the same name.

Selena Gomez and her boyfriend Benny Blanco went as Alice in Wonderland and the Mad Hatter for Halloween this year.

Alix Earle spooked in her Cheshire Cat costume from Alice's Adventures in Wonderland. Taking to her Instagram page on Sunday (October 27), the 23-year-old influencer shared pictures of her impressive Halloween look.

She captioned the post: “As the Cheshire Cat once said … ‘we’re all mad here’.”

Victoria Justice went as a Tim Burton character this Halloween. Taking to her Instagram page on Monday (October 28), the Nickelodeon star shared a carousel showcasing her take on Coraline.

“The name’s Coraline, Coraline Jones,” Victoria captioned.

Bowen Yang dressed up as a moisture-absorbing packet of silica gel.

Halle Bailey was seemingly inspired by her own name for Halloween this year. The 24-year-old actress went as Halle Berry in the 2002 James Bond movie Die Another Day.

Wearing the iconic orange bikini accessorized with the quintessential knife placed in its white belt, Halle perfectly embraced the character of Giacinta "Jinx" Johnson.

Paris Hilton was “serving Mia Wallace realness,” from the 1994 crime movie Pulp Fiction, as she announced on her Instagram page on Wednesday (October 30).

Kelly Ripa and Mark Consuelos dressed up as Taylor Swift and Travis Kelce, re-creating the couple’s outfits from their date at this year’s US Open.

Anne Hathaway took to her Instagram on October 25 to share a carousel that included her Halloween look, which was a spooky take on the Statue of Liberty.

To create this look, a fusion between the emblematic monument and a ghost, the 41-year-old actress wore a platinum blonde wig, white face makeup, black paint around her eyes, and dark red lipstick.

Sophie Turner turned heads in a The Matrix inspired costume. Taking to her Instagram page on October 27, the 28-year-old shared photographs of herself flaunting an all-black latex ensemble paired with a leather coat and black sunnies.

She captioned her pictures: “Red or blue pill,” as a nod to the 1990s cult classic sci-fi movie.

Zooey Deschanel and her husband, Jonathan Scott, dressed up for Halloween but didn’t go the traditional route, opting out of a couple’s costume this year.

While Jonathan dressed up as Wolverine, Zooey chose a niche theme, dressing up as The Real Housewives of Salt Lake City cast member Angie Katsanevas, depicting a Mormon churning milk in one of the reality TV series episodes.

Megan Thee Stallion shared an impressive cosplay take on the 2018 anime action series JoJo's Bizarre Adventure: Golden Wind for Halloween this year.

Lady Gaga released the highly anticipated music video for Disease on Tuesday (October 29), which is the newest single from LG7—her forthcoming seventh studio album. 

Just in time for Halloween, she showcased a twisted fashion fantasy that was equal parts glamorous and grotesque, Cosmopolitan reported on Tuesday.

Kylie Jenner stunned in not one, but two looks from the 1969 sci-fi comedy Barbarella. The 27-year-old socialite embraced Jane Fonda’s astronaut heroine.

In one look, Kylie donned a gleaming chest plate over a white gown that was torn at the midriff to reveal splashes of blood. 

For the second part of her costume, the mom-of-two transformed into a feline figure, draped in a plush fur coat with an oversized, dramatic tail.