Heidi Klum’s iconic derrière might steal the spotlight in this year’s eagerly awaited Halloween costume.

The supermodel sparked curiosity on Instagram Friday by posting a mysterious image that seemed to feature a plaster cast of her entire midriff, highlighting her back and bottom.

“Feeling cheeky 🍑😜,” she playfully hinted in the caption, tagging prosthetic makeup artist Mike Marino.

Klum, renowned for her increasingly elaborate and sometimes grotesque costumes at her annual ‘Heidiween’ events, had previously hinted at this year’s secret ensemble in an October 1st post.

The “Project Runway” host shared various views of a facial prosthetic mask displayed on a metal stand.

“This is just the beginning 👀👻💀🎃,” she captioned the early tease, adding the hashtag, #HeidiHalloween.

On Saturday, Klum, 52, promised that following her adorable E.T. alien costume from last year — which she matched with husband Tom Kaulitz — she would again go for a repulsive look, in the vein of their 2022 worm and fisherman costumes or their 2018 Shrek and Fiona getups.

“I’m going to be very ugly because I always try to do something different,” she told People.

“I thought last year, I was very cute with my husband as E.T. And the year before that, we were the big peacock with performers. After the worm [in 2022] that felt so simple, I wanted to make something complicated.”

She added, “And with having 15 [performers as part of the peacock costume], being so many bodies creating one thing, I thought that that was different again.”

“So I hope I came up with something new again.” 

Of her over-the-top peacock costume, Klum told Page Six at the time, “There’s a lot of moving parts and people needing this and that. You know, [hair]spray, and so it’s a lot of commotion with so many people doing this, you know?”

In August, Klum again indicated her plans for an ugly Halloween. “I’m hard at work already,” she told Jimmy Fallon during a “Tonight Show” appearance. “Like, already months ago.”

Klum added that the costume would be “super scary” and “extra ugly.”