Sad, weird "sheet of paper waist challenge" in China

Just out of curiosity, what sort of waist circumference would this work out to? Plainly more than 16 inches and less than 25 ≈ 8π (or 8τ/2), so maybe about 20 around? I don’t really know the eccentricity of a typical waist, and wonder just how unhealthy it might be.

Wait, does it count as astroturf if you’re promoting a book that you haven’t written yet?