Off the Shoulder Strapless Sleeveless Long Formal Dress With Tulle Country Flags Of The World 162+ Thousand Ball Country Flags. Float through your event in our Off the Shoulder Formal Dress with strapless design and ethereal tulle. This sleeveless long gown combines romantic neckline with delicate fabric. Perfect for formal weddings and galas. Elegant off shoulder style with soft tulle overlay. Available in multiple sizes. Find beautiful formal dresses at koscy.