Boob Ribbon
Boob Ribbon, or 例の紐 (Rei no Himo, translated from Japanese as 'That Ribbon'), is the blue ribbon worn by Hestia in the 2015 anime Is It Wrong To Pick Up Girls In A Dungeon?. Its odd chest-support design sparked a Japanese Twitter trend in April 2015 where women tied ribbons around their torsos to test if the look actually boosted cleavage.
Overview
The Boob Ribbon, called 例の紐 (Rei no Himo, translated from Japanese as 'That Ribbon'), is the blue ribbon worn by Hestia, a goddess character in the anime and light novel Is It Wrong To Pick Up Girls In A Dungeon? (also known as DanMachi)3. It loops under her chest and over her upper arms, appearing to lift her bust every time she raises them1.
Hestia is drawn in a short white dress with a plunging neckline, gloves, and long twin-tail hair, but fans latched onto the ribbon as her defining feature1. The design's odd chest-support logic turned into a running joke in the fandom, spilling out into real-life imitation, copycat merchandise, and Western tabloid coverage.