Halloween parties always bring out the best celebrities, not to mention the best celebrity costumes. Just in time for the holiday, we're serving up some inspiration with 70 of our favorite star costumes over the years. From the guests at Kate Hudson and Heidi Klum's Halloween bashes, celebrity attendees got busy dressing the part - from the good, like Miranda Kerr's sexy circus ringleader look to the downright scary - Heidi, we're looking at your cadaver suit - all style rules went out the window. Instead, we're looking to the wacky, zany, and all-out creative for high-impact Halloween looks. Click through for the best celebrity costumes over the years, then be sure to share your favorite in comments.