How Heidi Klum transformed herself into Shrek's Princess Fiona for Halloween costume

Without a doubt there's only one place you want to celebrate Halloween and that is Heidi Klum's Halloween party, which she hosts every year in New York city. 

Last night, Klum threw her 19th annual star-studded party at New York hot spot Tao, alongside her new boyfriend, Tom Kaulitz (who went as Shrek), and debuted her best costume yet. Stepping out as Shrek's female ogre, Princess Fiona, the star was unrecognisable in a super-sized bodysuit and green ogre-like make-up with ears to match. 

Revealing her look on Instagram, it was clear that this was not just a simple transformation; rather, she underwent hours of prosthetics and make-up to create her incredible ogre princess look.

Here, the model shares a selfie with her boyfriend half way through their extraordinary double-act transformation. 

Taking her fans through a step-by-step transformation on her Instagram account, Klum gave thanks to the talented team behind her look, New York based prosthetics company Prosthetic Renaissace.

Klum's boyfriend in the make-up chair having his green prosthetic ogre-like skin applied. 

Taking her costume to a new level of hype and intrigue, Klum shares a fun selfie video of her final touch-ups. 

In an interview recently with USA Today the model revealed, "You have to feel amazing in your costume... You need to look in the mirror and think, 'wow this is amazing.'"

Her previous showstopping costumes include Michael Jackson's "Thriller" look, Jessica Rabbit, and the year she went as a terribly-convincing old woman. The prevailing question is, what will she go as next year?

See all of her best looks thus far, here.

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