Heidi Klum, the queen of Halloween, outdoes herself with her most bizarre costume yet: a worm

• Heidi Klum threw her 21st annual Halloween party on Monday in New York City.
• Klum, 49, transformed into a worm while her husband dressed as a fisherman with a bloody eye.

Heidi Klum just unveiled her highly-anticipated Halloween costume as a giant, realistic worm.

Klum, 49, hosted her 21st annual Halloween party on Monday in New York City's Sake No Hana at Moxy Lower East Side. Klum's return as the undisputed Queen of Halloween comes after her party was canceled for two years because of the COVID-19 pandemic.

Photos showed Klum dressed head-to-toe in ridged prosthetics that covered every inch of her body except her mouth, eyes, and a small opening for her shoes.

Her husband, Tom Kaulitz, accompanied the former supermodel dressed as a fisherman with a bloody eye. The couple posed on the blue carpet together ahead of the event, with Kaulitz pretending to use Klum as fishing bait.

Klum was also photographed lying down on the ground in a method approach to her creepy-crawly costume. While Klum took inspiration from the animal kingdom, her 18-year-old daughter, Leni Klum, appeared to follow suit and made her debut at the coveted party as Catwoman.

The party featured a DJ set by Questlove and a star-studded guest list, including Queer Eye's Antoni Porowski, singer Ava Max, and new Twitter owner Elon Musk.

Klum began teasing her costume on her Instagram account Monday afternoon, sharing a series of behind-the-scenes videos of her and Kaulitz preparing for the festivities. One video showed a professional spraying paint atop Klum's prosthetics, while another showed Klum trying on the costume ahead of the holiday.

On Monday, Klum appeared live with Amazon for "Halloween with Heidi Klum" and gave audiences a glimpse into the preparation process.

Mike Marino, the founder of Prosthetics Renaissance, told Amazon that his team had created seven Halloween costumes for her so far.

"This is a whole costume," Marino said before talking about the creation process. "It takes, really, months to build and design. We start with sketches and drawings. We go back and forth with things. Then we decide what it should be, and we see if it's even possible for Heidi to wear."

Klum emerged as a pop culture phenomenon because of her Halloween costumes. In 2001, Klum attended her second-ever party riding a horse and dressed as the dead Lady Godiva.

She later dressed as the human body – complete with muscles and tissue – in 2011 and arrived at her party as a butterfly with an anatomically correct mask in 2014.