"November 1st, the day after Halloween, I start wracking my brain already [with] what I'm going do the next year. I don't know why, but for me, Halloween is such an amazing fun night," Klum told ET before her party last year, adding that her own love for the holiday inspired her famous annual Halloween bash.
"Literally 15 years ago I thought, 'Why is there no gigantic Halloween party in New York City? This is New York City! They should take this more seriously!' And so I thought I wanted that to be my night where people really go all out, and I always put on the invitations 'if you don't have a costume you will not get in.'"
Throughout the years, Klum has definitely stepped up her Halloween game, and she says her party guests have followed suit.
"I love that process, and I feel like you have more fun that way too," she added. "I feel like when everyone is in costume, they're just more free and they have more fun and just makes the whole night more special."