![1girl artist_name ass bangs black_legwear black_panties black_skirt blush breasts brown_eyes brown_hair cropped_shirt highres large_breasts long_hair looking_at_viewer original panties pleated_skirt shirt short_sleeves simple_background skirt thighhighs thighs underboob underwear white_background white_shirt wsman rating:q score:18 post #3981828](/cdn_image/preview/48/bb/48bbef594bb2e8a2cc6e4c8e26cca971.jpg)
The shirt is either so skimpy or hiked up that the bottom of the breasts are visible. Typically, to be considered "underboob", the nipples are not visible.
The following tags are aliased to this tag: underbreast and under_boob (learn more).
This tag implicates breasts (learn more).