An outfit that has gone viral from a user named Myako's tweet here, on December 4th, 2014. The turtleneck ribbed sweater prominently features a center opening that reveals the cleavage of the user wearing it.
Artists eventually began throwing around the challenge to draw their waifu or husbando in the sweater.
Please note that sweaters with cleavage cutouts are nothing new. Only use this tag if the sweater the character is wearing is identical/adapted from the one in the tweet or if the artist tags it open-chest sweater/says it is related to the whole fad.
- Pixivision: Too sexy! A slit across the chest collection
- Pixiv Encyclopedia: 胸開きタートルネック
- Nico Nico Pedia: 胸開きタートルネック
- Know Your Meme: Keyhole Turtleneck
- Twitter image search
- NicoSeiga tag search
- NetLab news article (JP)
- Togech news article (JP)