Ever wonder what it's like to walk in Scarlett Johansson's shoes? Now you can—literally! The actress is among the stars auctioning off signed pairs of their very own (worn!) heels for Hero in Heels, a program founded by the Wish Upon A Hero Foundation that benefits women with cancer. While Johansson's cream Tod's platforms don't go on auction until the charity's May 20th event in Philadelphia, pairs from Taylor Swift, Emmy Rossum and Malin Akerman are up for the highest bidder online until tomorrow. Check out our gallery to see our favorite star stilettos from the auction.