You know the questions they sometimes ask in I.Q. tests, in which they try to determine your ability to picture things in three dimensions? I’ve never been very good at those questions, although I think learning to sew has helped me improve my 3-D imagination in recent years. It turns out this fledgling skill is handy in clothes shopping, too, since so many clothes are designed with “hanger appeal,” meaning that they look great on a hanger but not as nice stretched over a more topographically varied shape. For those of us whose bodies don’t go straight down below our shoulders, it saves time trying things on if we can make a good guess of what something will look like on a different form. The other day I realized that with my current physique, the easiest way to picture what the clothes will look like is to picture them stretched over a beach ball.