This is a costume and hairstyle decoration set for a Chinese beauty pageant.

The set includes a red dress, a green belt, and a black hat.

These elements all represent beauty and elegance in traditional Chinese culture.

Red symbolizes passion and vitality, while green represents nature and life force.

Black signifies mystery and nobility.

The combination of these colors makes the costume even more gorgeous and attractive.

In addition, the set comes with some exquisite hair accessories, such as hair flowers and hairpins, which further enhance the overall aesthetic and fashion sense.

Overall, this costume and hairstyle decoration set showcases the pursuit of beauty and elegance in traditional Chinese culture, while also reflecting modern women's pursuit of fashion and individuality.