Wal-Mart targets new look

Wal-Mart workers' blue vests decorated with 'How may I help you?' and the smiley face logo may be eliminated as the world's largest retailer makes another visible change as part of its efforts to upgrade stores and attract more shoppers.

Wal-Mart is to adopt a new dress code of blue polo shirts and khakis in about 1,400 stores in the northeast and south of the US. Wal-Mart has more than 3,600 discount stores and "Supercenters", which combine a discount store with a full grocery section.