Fabric Loft (U.K.): Free shipping on orders £45+. (through 8/31/10)
Fat Connection: Japanese Fabric Special Promotion. Spend 20USD/30SGD to get 20% off (with code fabricspecial-20); Spent 40USD/60SGD to get 30% off (with code fabricspecial-30); Spent 60USD/90SGD to get 40% off (with code fabricspecial-40) Order amounts and discounts apply to fabrics only. (through 8/23/10)
KimoYES (Australia): Huge sale section has 20+ pages full of gorgeous vintage Japanese silk and cotton remnants, including the silk crepe butterflies above. (while supplies last)
Mad About Patchwork (Canada): Lots of fabrics at 30-50% off in the summer clearance sale. (through 8/31/10)
Pink Panda Fabrics (Canada): End of summer clearance sale. (while supplies last) Always free shipping in Canada, no minimum required; free shipping to USA on orders $99+.
River Fabrics: All fabrics 10% off. (through 8/31/10)
See this post on I’m a Ginger Monkey for lots of coupon codes and sales for several U.K.-based fabric shops.