The 46-year-old has already started prepping her 2019 look, an impressive two months early, and took to Instagram to tease fans with a sneak peak.
In the video, the mother-of-four can be seen keeping extremely still in a crouched position wearing nothing but her underwear and a pair of heels.
Meanwhile, a technician appears to be capturing her measurements with a handheld optical scanner - a sure-fire sign that we can expect some creative prosthetics.
Within the space of 24 hours, the post has already amassed over one million views with fans taking to the post to comment in excitement.
“Can’t wait to see what you come up with this year! I always look forward to seeing/ obsessing over your Halloween costume,” one follower wrote.
Another agreed, adding: “Yes! Can’t wait to see what she is this year! Also, the effort that goes in to her costumes is unreal.”
READ MORE: 31 incredible celebrity Halloween costumes
Although we don’t know what Klum’s plans are this time around, it’s sure to be a crowd-pleaser thanks to her rather impressive track record.
For her 2018 annual A-list bash, the model dressed as Princess Fiona while her husband, Tom Kaulitz, was unrecognisable in a Shrek costume - an epic transformation which took over nine hours to complete.
Click below to see every one of Heidi Klum’s Halloween costumes:
Previous looks of Klum’s have included the use of look-a-like models, a 95-year-old version of herself and a now-famous Jessica Rabbit interpretation.
Proving it’s not just about donning an outfit, she even acquired dance lessons to pull off a werewolf from Michael Jackson’s ‘Thriller’ video back in 2017.
Although it may seem early for Klum to start planning her look, she’s previously admitted that she’s starts thinking about the next Halloween surprise on November 1 - just one day after the spooky holiday.
But she’s not one to give away too many spoilers so we’ll have to wait and see what Klum has up her sleeve this year.
We don’t want to wish summer away but erm, bring on Halloween?