This is a Chinese traditional folk dance hair accessory called Yangko Samba Dance Headwear for Women.
It is made of blue and silver sequins, which are arranged in a beautiful pattern.
The headwear has a round shape and is decorated with intricate designs.
It is a popular accessory among women who enjoy traditional Chinese dance performances.
The headwear represents the elegance and beauty of Chinese culture, and it adds a touch of glamour to any outfit.