I only got 12. But my wife is a massive 83%! She can't even wear pants or belts anymore, just huge elastic skirts! They look like tents and the tag says 8L (that's XXXXXXXXL!)...but they look so skintight and clingy on her!
That probably translates to XXXL in American plus sizes...but in Japan, even "plus size" ladies are so much thinner in general, my wife is so obese they classify her as not just "extremely large" but practically "kaiju sized" !