Dig around for Barker’s Bones on the Old Navy Facebook page  and see what kind of coupons you can find! The last time I participated I got a coupon for $10 off of $50! You do have to use the coupon in the store, but it can be used on sale items or any other deals they may be having!
Also, this Saturday, June 12th, Old Navy will have most of their tank tops on sale for $2! Many stores will be opening early in anticipation! Check their facebook page  for all the details!