Head on over to Facebook and grab a coupon to save 20% off of your purchase at Old Navy. Once you click to redeem the offer, the coupon will be emailed to you (via your email account on Facebook). You can then print and take it with you to the store — or save paper and just show the coupon to the cashier on your phone! The coupon is valid through July 10, 2012.
(Note: The coupon excludes uniform purchases).