We're calling it: This is Heidi Klum's best Halloween transformation yet.

Heidi Klum is the undisputed queen of Halloween.

The model and Project Runway host, 45, has been hosting her #HeidiHalloween parties since 2000 and has been wearing increasingly epic costumes each year since.

This year marks 19 years of her parties and costumes, so you know Klum had to go big.

After days of teasing on Instagram, and sharing her previous costumes as part of a #HeidiHalloween countdown (this is soo extra, we love it), Klum and boyfriend Tom Kaulitz finally arrived at her 2018 Halloween party as Shrek and Princess Fiona.

And it is amazing.

If you're thinking 'How the HECK did Heidi Klum transform herself into an ogre?' then wonder no more, because Klum showcased the painstaking process on Instagram - because of course she did.

 

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Thank you to all of the talented artists who made Fiona and Shrek a reality! ???????????????? #heidihalloween @prorenfx @mikefontaine_ @nikkifontaine @nicolasputvinski @atelierizquierdo @izminog ????@kdbnyc

A post shared by Heidi Klum (@heidiklum) on Nov 1, 2018 at 11:33am PDT

 

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@prorenfx @mikefontaine_ .... love you guys ????????

A post shared by Heidi Klum (@heidiklum) on Oct 31, 2018 at 12:05pm PDT

 

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A post shared by Heidi Klum (@heidiklum) on Oct 31, 2018 at 12:41pm PDT

 

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❤️❤️

A post shared by Heidi Klum (@heidiklum) on Oct 31, 2018 at 3:08pm PDT

 

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❤️

A post shared by Heidi Klum (@heidiklum) on Oct 31, 2018 at 3:48pm PDT

 

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????????

A post shared by Heidi Klum (@heidiklum) on Oct 31, 2018 at 6:04pm PDT

We have a few questions: Like did Princess Fiona really have such a large chest? Can she breathe with that nose prosthetic? And also... How did she use those GIANT ogre hands?

Logistics aside, this is incredible.

Klum has pulled out some truly extraordinary costumes in the past, like when she literally learned to walk on stilts for her costume in 2010, or the time she was an eight-month pregnant apple.

 

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You can’t be Michael Jackson in Thriller for #HeidiHalloween without the dance…. well here it is!!!! Post videos of your own Thriller dance and tag me so I can see! #HeidiKlumHalloween #HeidiHalloween2018

A post shared by Heidi Klum (@heidiklum) on Oct 30, 2018 at 10:33am PDT

 

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Countdown to Halloween: 7 days! Las Vegas wasn’t enough for #HeidiHalloween in 2011! We also threw a party in NYC where my costume was inspired by Planet of the Apes! This was my first year with intense prosthetics and I’ve been keeping it up every since! #HeidiHalloween2018 #HeidiKlumHalloween

A post shared by Heidi Klum (@heidiklum) on Oct 24, 2018 at 10:31am PDT

 

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Countdown to Halloween: 12 days! This year really showed my dedication to #HeidiHalloween! Even though I was 8 months pregnant, that wasn’t stopping me from throwing the party! I dressed as an apple since it was the costume with the most padding around the stomach #HeidiKlumHalloween #HeidiHalloween2018

A post shared by Heidi Klum (@heidiklum) on Oct 19, 2018 at 8:00am PDT

 

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Countdown to Halloween: 8 days! 2010 was another year where my dedication to #HeidiHalloween proved itself! I learned how to walk on stilts specifically for this giant glitter robot costume. It wouldn’t have been the same if I didn’t tower over all of the guests! #HeidiHalloween2018 #HeidiKlumHalloween

A post shared by Heidi Klum (@heidiklum) on Oct 23, 2018 at 6:51am PDT

 

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Countdown to Halloween: 7 days! The skinless bodysuit I wore in Las Vegas for the first of our 2011 #HeidiHalloween parties was a favorite of mine. Who else was super fascinated with Bodyworks?! #HeidiHalloween2018 #HeidiKlumHalloween

A post shared by Heidi Klum (@heidiklum) on Oct 24, 2018 at 6:42am PDT

 

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Countdown to Halloween: 5 days! In 2013 it only took me 10 hours to age soooooo many years for #HeidiHalloween ???? This was one of my favorite costumes! When I arrived, it took everyone a little bit before they realized it was me! #HeidiHalloween2018 #HeidiKlumHalloween

A post shared by Heidi Klum (@heidiklum) on Oct 26, 2018 at 6:50am PDT

 

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Countdown to Halloween: 3 days! In 2015 I dressed up as Jessica Rabbit for #HeidiHalloween ❤️ I had the idea after dressing up as her for an editorial shoot years ago #HeidiHalloween2018 #HeidiKlumHalloween

A post shared by Heidi Klum (@heidiklum) on Oct 28, 2018 at 9:04am PDT

See? She's a Halloween legend. But we think her Princess Fiona tops the lot.

Of course, attending Klum's annual Halloween bash comes with a lot of pressure.

Her guests certainly brought their A game or uh, their sass: Mel B dressed as Victoria Beckham.

 

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Happy Halloween ????

A post shared by Barbara Palvin (@realbarbarapalvin) on Nov 1, 2018 at 11:09am PDT

 

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AS IF! #Halloween #Clueless

A post shared by Lupita Nyong'o (@lupitanyongo) on Nov 1, 2018 at 7:05am PDT

 

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“You can fail at what you don’t want, so you might as well take a chance on doing what you love.” - Jim Carrey Thank you Jim for being my forever inspiration. ????????

A post shared by Kat Graham (@katgraham) on Nov 1, 2018 at 6:32am PDT

We're already excited to see what Klum does for next year's 20th year of #HeidiHalloween.

Here's to many, many more years of ridiculously OTT costumes.