Heidi Klum Teases 25th Anniversary Halloween Costume with Graphic Prosthetic Hints

Key points

• Klum shared Instagram teasers on October 24 and 28 featuring prosthetics resembling organs, brains, and coral.
• Special effects makeup artist Mike Marino stated the 2026 costume is the most elaborate and difficult he has worked on.
• The party marks the 25th anniversary of Klum’s annual Halloween event, which she started in 2000.
• Klum previously told People magazine that the costume will be 'very, very bloody' and pairs well with red wine.
• Tom Kaulitz has historically joined Klum in elaborate costumes, such as the Greek soldier in 2025 and E.T. in 2024.

Background

Heidi Klum launched her annual Halloween party in 2000 after finding other celebrity costumes lacking. Over the past two decades, she has debuted increasingly complex transformations, including a giant earthworm in 2022, a peacock in 2023, E.T. in 2024, and Medusa in 2025. The 2025 Medusa costume involved moving robotic snakes and took approximately 10 hours to construct, setting a high bar for the 2026 reveal.

How outlets are covering it

All four sources agree on the core facts: Klum is teasing a bloody, complex costume for her 25th annual party, and Mike Marino is involved in its creation. However, the outlets differ in their interpretation of the visual clues. E! News and Vanity Fair describe the prosthetics as resembling a coral reef or aquatic creatures, while Yahoo and BuzzFeed focus on the 'bloody' and 'organ-like' aspects, suggesting body horror. Fans have also diverged in their guesses, with some citing The Substance, The Last of Us, or Stranger Things, while others suggest aquatic themes or internal organs. Klum herself has remained vague, only confirming the 'bloody' nature of the costume in a September interview with People.

Why it matters

Klum’s Halloween party is a significant cultural event in the entertainment industry, known for its high production value and celebrity attendance. The 25th anniversary adds historical weight to this year’s reveal, and the involvement of top-tier special effects artists highlights the increasing complexity of celebrity costume culture. The event also serves as a platform for Klum’s brand and her collaborations with partners like Tom Kaulitz and makeup artist Mike Marino.

What to watch

The full costume will be revealed at the 'Heidiween' party on October 31 in New York City. Klum has indicated that the reveal will happen on the red carpet. Fans and media will be watching for the final look, which is expected to be a major talking point in entertainment news. Klum may also share more hints in the coming days, but the primary reveal is scheduled for the party itself.