Aya is a woman of average to above-average height and slim build. Of fine features, she wears her light hair in an arrangement between a slight beehive and a ponytail; her bangs divided in two, in a clean arch reaching cheek level. Her dark eyebrows rest high on her forehead.
She wears a pink dress with a thick corset belt at her waist, two smaller belts buckled around it. She is depicted with a more notable cleavage in the anime.
(Source: JoJo's Bizarre Encyclopedia)