Pippa Middleton was spotted riding a bike around London, wearing a casual look. The Duchess of Cambridge's younger sister, who recently cut her hair into a chic lob, was seen wearing a plaid shirt and black cropped jeans. She styled her laid-back look with a pair of sneakers that are a favorite among celebrities: the Adidas Stan Smiths. But these are no regular pair of Stan Smiths. When we zoomed in, we noticed that her white low-tops actually featured gold foil branding and a gray heel patch. Read on to see Pippa's sneakers, and buy the same pair for your collection, too.