Old Navy on Facebook is offering a printable coupon for 20% Off a Single Item.
This is available for US & Canada Residents. I have been to Old Navy recently and they have some fantastic clearance deals going on, so you could definitely snag something for a really great price especially since it says the coupon only excludes jewelry and gift cards. So I would definitely head on over to the clearance rack first.
Print your coupon and use it through February 2nd.