Chinese girls and young women are being pressured by a bizarre social media fad into proving that their diet-toned midriffs are no wider than a piece of A4 paper.
The trend has seen participants trying to demonstrate their waists are equal to or narrower than the width of the average printer paper, according to People's Daily Online.
Tens of thousands of people have joined the conversation on Weibo, China's equivalent of Twitter, and sharing their results.
Social media user were unrelenting in their derision of the whole concept, with user xiao11211614 writing on Weibo: 'I’m a size smaller than A4. I’m A3.'
Others were equally quick to make fun of the trend by saying that they too have A4 waists, when the paper is held horizontally.