Heidi Klum lip-synced Jessica Rabbit in a very HOT performance

Many people across the Internet seem to agree that Heidi Klum WON Halloween with her extravagant Jessica Rabbit costume. 

But unless you were actually at her famous party, you might not have known that her commitment to the character extended to an actual performance.

Yes, Heidi lip-synced to Why Don't You Do Right, the song Jessica sang in Who Framed Roger Rabbit.

And staying true to her Halloween get-up, Heidi even flirted with some of the party attendees. We'd certainly say this was a party to remember: