Old Navy: 30% off Storewide Sale April 28, 2010 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. The Old Navy Wholey Moley Sale is this weekend from April 30th to May 2nd. The whole store store will be on sale 30% off!. Valid in store only. Go here for more details. Thanks, Mojo Savings!