Adding pockets to dresses doesn't solve any of those longstanding issues." Old Navy's fourth-quarter sales fell 6% over the previous year, while sales at its stores open at least a year fell 7%. But the sales slump came amid declining sales in the same period for all of Gap Inc. divisions, including its namesake Gap brand, Banana Republic and Athleta. Overall sales during the quarter for Gap Inc. tumbled 6% from a year ago. Still, Old Navy historically has been the star of the group, accounting for a majority of Gap Inc.'s revenue.