Gap cuts 40% off sitewide, including sale items, via coupon code "GAPXMAS". That ties last week's mention as the second-best discount we've seen all year. (We saw 50% off sitewide during Black Friday week.) Shipping adds $7, or get free shipping on orders over $50 (before discount). Deal ends December 19.
Orders placed by December 19 are guaranteed to be delivered in time for Christmas.