Every year we look forward to Heidi Klum's outrageous Halloween costume [1], and she's already gotten started on this year's getup. On Wednesday, the 46-year-old America's Got Talent judge gave fans a sneak peek of what to expect on Instagram. Alongside a video of Prosthetics Renaissance [2] (also known as ProRen FX) designer Mike Marino sculpting a bust, Heidi wrote, "I am so excited for all of you to see his artistry in action! Join us to see my costume unfold on Halloween [3] starting at 10AM in the front window of the @amazon Store at 7 W 34th St in Manhattan. The @prorenfx team will spend 10 hours transforming me into (it's a secret). Hope to see you there! #heidiklumhalloween." It's still too early to tell what Heidi has in store for us, but if her costume is anything like her past ones, we're in for a real treat.