胸開きタートルネック 例のタートルネック 胸空きタートルネック
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 cleavage cutout.
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.
Also called 例のセーター or that sweater as with the virgin killer sweater, although with limited use.
The following tags are aliased to this tag: keyhole_sweater (learn more).
This tag implicates meme_attire and sweater (learn more).