Esdeath, Akame ga Kill

A woman dressed in a costume, likely from the anime series Akame ga Kill. She has long blue hair and is wearing a white dress with black accents, including a belt around her waist and a choker around her neck. Her outfit also features a black jacket or cape draped over her shoulders. The woman's attire is completed by knee-high boots that are predominantly white but have a black stripe running down the center of each boot. The overall style of her costume suggests that she may be portraying the character Esdeath, who is known for her striking appearance and powerful abilities in the series. The setting appears to be an indoor location, possibly a convention or event where fans of the anime can gather and show off their costumes.