The dress in the image is a light blue evening or gala dress, with the following characteristics:

Style: Gown with A-cut and a high leg opening.

Neckline: Halter with deep V-neck.

Details: It has floral or lace details applied to the bodice, especially on the top and neckline.

Fabric: It seems to be of a light and vaporous material, possibly tulle or chiffon, which gives it a fluid fall.

Occasion: Suitable for formal events such as proms, weddings, galas or elegant parties.