September 22, 2011 No Comments Old Navy: Buy One Get One 75% Off Sale! Try a new fall look at Old Navy’s Buy One Get One 75% off sale! Happening now through Sunday 9/25. In-store only. Plus, there is a 30% off one item coupon here. Old Navy: Buy One Get One 75% Off Sale! – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.