If you've ever wanted to know what it's like to walk a mile in a celebrity's shoes, now's your chance. Piperlime, a fresh online shoe shop from Gap Inc., today announced that it will host an online celebrity shoe auction to benefit its exclusive charitable partner, Soles4Souls.

Piperlime worked with dozens of Hollywood's hottest celebrities to autograph and donate their fabulous footwear for the auction, which can be accessed online at piperlime.com. Bidding begins Thursday, May 3 and concludes on Monday, May 14.

The auction features new and gently-used shoes donated by nearly 30 influential celebrities and athletes, including Lucy Liu, Jessica Simpson, Mischa Barton, Rosario Dawson, Mandy Moore, Alonzo Mourning, Haylie Duff, Joely Fisher, Wayne Gretzky, Mariska Hargitay, Teri Hatcher, Eric Mabius, Vanessa Minnillo, Parker Posey, Jamie-Lynn Sigler, Sharon Stone and Rachel Zoe.

One hundred percent of the auction's proceeds will go to Soles4Souls, a unique non-profit organization whose simple mission is to impact as many lives as possible with the gift of shoes. Since its inception two years ago, Soles4Souls has collected and distributed millions of pairs of new and gently- used footwear to those in need.