Heidi Klum Gets Covered In Slime While Prepping Her Halloween Costume

Heidi Klum wears a matching striped top and pants as she arrives at LAX airport on Thursday afternoon (October 1) in Los Angeles.

The 42-year-old supermodel is already getting prepped for her favorite holiday – Halloween!

PHOTOS: Check out the latest pics of Heidi Klum

Heidi is known for her extravagant Halloween costumes and took to her Instagram to share the preparations for this year.

“It’s almost time for my favorite holiday! Costume prep time with the team at @prorenfx Can’t wait for Halloween! 🎃,” she shared along with a video of her costume being created, which consisted of getting a slimy full body cast made!

“So yucky but so worth it in the end 🎃,” Heidi later captioned an image with her face covered in slime.

We wonder what the costume could be!

Click inside to see more photos of videos of Heidi Klum‘s Halloween costume…