She wears the standard issue female school uniform consisting of a warm gray blazer fully buttoned and untucked, brown sweater vest, white shirt fully buttoned and tucked, red ribbon, dark blue pleated skirt, black thigh-high socks and white uwabaki slippers with pink tips. She is of average height and the second tallest character, behind Yuri or the protagonist.
Like the other female characters, she has two prominent strands of hair beside her bangs that reach slightly past her chest.
Monika has extensively long coral brown hair that she keeps tied up in a high ponytail tied back with a large white bow, curled slightly at the ends.
