Oooh, rarely do we catch a glimpse of someone shopping at Stella McCartney. Reese was doing just that, in a tried and true shopping outfit: Belle by Sigerson Morrison flats, crisp white cropped jeans, and an easy throw-on, throw-off pewter top. The artsy necklace and the calm colors make for a cool and collected shopper. But the bigger question here is: What did she buy?!