![1girl alternate_costume animal_ears aqua_eyes bare_shoulders blue_hair blush breasts bunny_ears bunny_girl bunnysuit cleavage detached_collar eyebrows_visible_through_hair hair_ornament hairband highres isuzu_(kantai_collection) kantai_collection large_breasts long_hair looking_at_viewer navel navel_cutout pantyhose simple_background solo timato twintails white_background rating:s score:15 post #3851606](/cdn_image/preview/7e/91/7e91fb9e87007994ffac864f9e0f5654.jpg)
A "bunny girl" generally refers to a Japanese term given to a Playboy bunny, especially one who wears a bunnysuit.
But some images having this tag do not refer to the Playboy bunny, but simply a female human or anthromorph having rabbit ears, but not necessarily the other elements of the Playboy bunny.