It is officially the scariest night of the year and, while everyone in Hollywood and beyond has been showing off their elaborate costumes, there is one reveal that we're truly excited for.
Heidi Klum has cemented her place as the official Queen of spooky season thanks to her wild, weird and wonderful outfits over the last few years - including her unforgettable stint as a worm in 2022, and her equally impressive version of ET last year, complete with a glowing finger and fashionable accessories.
Well, she is a supermodel, after all…
She effortlessly outshines her guests at her annual Halloween party, held in New York, and this year is set to be no exception.
Appearing on Good Morning America earlier this week, she teased: I'm ready already. But if I had to give you a tease, I'm gonna be very ugly. Very scary! But very ugly.
As the festivities begin, here is a look at some of the most impressive outfits at Heidiween 2025 and beyond.
But it's not all about Hollywood (or Heidiwood). Even politicians are getting in on the action, including President Trump, who is hosting a party at his Florida home.
And not every costume has gone down well, with some saying that US model Julia Fox's costume as a blood-soaked Jackie Kennedy was in poor taste.
Others have been more popular. Singer Demi Lovato recreated her Poot Lovato meme which went viral on Tumblr in 2015 - a reference to her alter-ego who has been locked in a basement.
Other highlights on social media so far include Kim Kardashian and Kanye West's daughter North West and her friends dressing up as Japanese kawaii-metal band BABYMETAL.
Maria Carey also went for a Japanese theme, with hot pink hair and a frilly pastel blue dress, and posting Happy Halloween from Japan in a photo with her two twin children.
Meanwhile, rapper Megan Thee Stallion portrayed Choso from the Manga series Jujutsu Kaisen. Additionally, singer Jade, formerly of girl group Little Mix, dressed up as Greta from the Gremlins, while singer Janelle Monae recreated the Cat in the Hat's famous aesthetic.
Paris Hilton recreated the famous look from Britney Spears's music video for Oops!... I Did It Again.
Actress Keke Palmer channeled her inner rapper by dressing up as Snoop Dogg (and lip-synching to his music).
Amelia Dimoldenberg, a content creator, depicted herself as the divorce of singer Lily Allen and actor David Harbour, dressed as Harbour's sheriff character and listening to Allen's music.
Lastly, US Vice-President JD Vance brought humor to Halloween by becoming the meme-version of himself.
