Ballgown Lunala, Pokemon Sun and Moon

The woman in the image is dressed in a ballgown Lunala costume, which is inspired by the Pokémon Sun and Moon game. The dress is purple with white accents and has a blue lining visible at the top of the bodice. The woman's hair is styled in an updo and she wears a gold headband around her forehead. She also wears long white gloves that reach up to her elbows. Her eyes are red, which suggests that she may be wearing contacts or makeup to achieve this effect. Overall, the woman's costume is well-made and accurately represents the character from the game.