Whatever Klum shows up as on Monday, it's sure to wow.
The supermodel first hosted her famous Halloween party in 2000, where she showed up as… we're not really sure. Klum got into the spooky spirit in a black latex dress, a spiked choker and China doll makeup.
Six years later, the Project Runway host showed off her creativity as she dressed as forbidden fruit -- her then-husband, Seal, stood by her side as Eve. While Klum's costume was wacky to say the least, it also conveniently concealed her pregnant belly (the model's third child, Johan, was born just a few weeks later).
And in 2015, Klum was completely unrecognizable as "the ultimate male fantasy": Jessica Rabbit.