The people who came up with "One Size Fits All" clearly didn't know the meaning of the word "All." Because, as we all know, humans are not all the same. We have different shoulders, different hips, different stomachs, and different boobs. In this Buzzfeed video, we get to see exactly what happens when five women of different body types try on a single "One Size Fits All" article of clothing.
Also, I'm a guy, and I'm pretty sure this thing would fit the worst on me. (Comment below if you're interested in setting up a Kickstarter to see me do this.)