Offer valid while supplies last through 03/21/2012 at Old Navy stores in the U.S. only (including Puerto Rico). Not valid online. Discount valid on purchases in multiples of two. Second item must be of equal or lesser value. Discount taken at register. Discount is allocated across multiple items in the transaction. Excludes graphic tees, clearance product and gift cards. No adjustments on previous purchases. May be combined with one other offer. Offer cannot be combined with Gap Inc. employee discount.