1girl, alternate_costume, armpits, black_collar, black_hair, blush, breasts, collar, collarbone, girls_und_panzer, green_eyes, grin, hand_on_own_head, hoshino_(girls_und_panzer), key_(gaigaigai123), looking_at_viewer, medium_breasts, midriff, navel, pants, shiny_skin, short_hair, simple_background, sleeveless, smile, solo, white_background