Back and better than ever! 

While Heidi Klum has been a supermodel for decades, gracing runways and fashion shows around the globe, she's also the host of one of the hottest parties in Hollywood. Every Oct. 31, celebs are treated to a night of fun and mystique at the supermodel's annual Halloween bash. This year is no different. 

In usual Heidi style, she pulled out all the stops and spared no expense when it came to her party. The 46-year-old dressed as an unrecognizable, bloody alien, who seemed to have abducted astronaut Tom Kaulitz during his mission in space. Not that her husband is complaining! 

Of course, Heidi is known for her jaw dropping looks. This year she already unveiled one of her many costumes, a dazzling firework look which would make Katy Perry proud. Who could forget her showstopping 2017 costume when she dressed as Princess Fiona from Shrek

If you're going to throw a party, you've got to show everyone how it's done. This year, celebs—including Mariah CareyMalumaJonathan Van Ness and more—showed up in full-force rocking everything from classic costumes to unique and one of a kind ensembles for the big event, sponsored by Amazon Prime Video and Svedka Vodka.

Scroll through the gallery below to see all of this year's incredible costumes.

Heidi Klum, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Tom Kaulitz, Heidi Klum, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

David Burtka, Neil Patrick Harris, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Jonathan Van Ness, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Antoni Porowski, Kevin Harrington, Heidi Klums 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Mariah Carey, Heidi Klum, Tom Kaulitz, Heidi Klum's 20th Annual Halloween Party

Mike Coppola/Getty Images for Heidi Klum

Barbara Palvin, Dylan Sprouse, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Maluma, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Georgia Fowler, Heidi Klums 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Hunter McGrady, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Questlove, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Taylor Hill, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Martha Hunt, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Maya Stepper, Mikkel Gregers, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

Elsa Hosk, Heidi Klum's 20th Annual Halloween Party

Noam Galai/Getty Images for Heidi Klum

We can't wait to see how she tops herself next year! 

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