Which country wears strapless dresses?

An off-the-shoulder dress worn by Dai people. Dai costumes have national characteristics and bright colors. Not only does the coat cling to the shoulders, but the front and back of the coat are not connected with the skirt. Moreover, the sleeves and cages of Dai costumes are also exquisite, and the sleeves are only enough to fit into one arm. The gauze skirt is particularly thin, reaching to the ankle, and the waist line of the skirt is particularly high. The girl wearing Dai costumes is very graceful.