In the Anime with the English name Is It Wrong To Pick Up Girls In A Dungeon, the heroine wears a ribbon under her breasts to raise them and boost her cleavage. This somehow got the attention of younger Japanese girls, and now the ribbon is a popular item in Akihabara. Selfies of girls wearing the ribbon (most of them without the face) have been going viral on social media.
this is quite fun: http://waku2japan.com/archives/12466 (traditional armor shop owner displays the ribbon on his goods)
Interesting. I never though that school uniform styles were inspired by manga, rather the contrary. How can you say what actually came first?