Heidi Klum might outdo herself this Halloween.

On Wednesday night, the German supermodel spilled a few details about her upcoming Heidiween bash in an appearance on “The Tonight Show Starring Jimmy Fallon,” teasing her highly anticipated costume for the annual event.

“Are you doing your Halloween party this year?” the host asked, stopping himself mid-sentence, adding, “You have to.”

“Of course!” Klum, 52, replied. “I’m hard at work already. Like, already months ago.”

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“So this year, what are we thinking?” he questioned the reigning queen of Halloween.

“Ooh, I’m going to be extra ugly,” Klum responded in a slightly mysterious tone. “And super scary.”

Fallon then asked if it would be a couple’s costume with husband Tom Kaulitz, as has been her tradition in recent years, but she was hesitant to reveal too much.

“Let’s not ruin it,” Klum said. “We have exactly 86 days, okay? But who’s counting?” the model joked.

Fallon also pulled up a photo of Klum at her very first Halloween gathering. “This is you in year 2000,” he explained.

“Well, this is boring, I have to say,” she admitted. “Very boring. This is my very first one. I was like, ‘Okay, I’m Heidi. I’m gonna do a Heidi-themed dirndl type thing,’ you know, in patent leather, and I thought that was cute.”

At the time, she did her own makeup in a simple yet dramatic fashion, but she’s obviously leveled up since then. “And over the years, I’ve met amazing people, and they help me now. They put prosthetics on me,” she said.

Certainly every year the “Project Runway” host’s looks get increasingly more dramatic. Last year, for instance, Klum and Kaulitz shocked everyone with their realistic-looking E.T. costumes.

Fallon also brought up perhaps her most talked-about costume to date — a worm, which she went as in 2022.

The countdown is on.

Heidi Klum on “The Tonight Show Starring Jimmy Fallon”

Heidi Klum and Jimmy Fallon on “The Tonight Show Starring Jimmy Fallon”

Heidi Klum and Jimmy Fallon on “The Tonight Show Starring Jimmy Fallon”

Tom Kaulitz and Heidi Klum Halloween costumes

Heidi Klum Halloween costume

Heidi Klum Halloween costume

Heidi Klum Halloween costume

Heidi Klum teased her upcoming Halloween costume on “The Tonight Show Starring Jimmy Fallon.”

“I’m hard at work already. Like, already months ago,” she told the host about her annual bash.

Klum has been hosting the star-studded party since 2000.

Last year, Klum and her husband Tom Kaulitz dressed up as E.T. WireImage

In 2022, the model shocked everyone when she went as a worm. Getty Images for Heidi Klum

“Ooh, I’m going to be extra ugly,” Klum revealed about her costume this year. FilmMagic

“And super scary,” she added. Getty Images for Heidi Klum