Customers walk out of Street Boutique, parked in Shirlington Village, Va. Street Boutique is a pop-up truck that's similar to the many food trucks in the area, except it sells clothes and jewelry.
The Chicago skyline is reflected in the exterior of Neiman Marcus on Michigan Avenue in Chicago in a file photo from 2009. The luxury retailer sold for six billion dollars on Monday.
M. Spencer Green/AP
A Nordstrom salesperson shows a customer an online selection of shoes on an in-store iPad. Like some other retailers, Nordstrom is using mobile devices to make on-the-spot sales and check companywide product inventory instantly.
Courtesy of Nordstrom