Some fashion Notes

I've recently noticed something that I find very strange, and quite amusing, I see 6'10" tall young men that weigh about 97 pounds wearing pants that seem to have the waist around their knees being held up by a very tight belt with nine pair of plaid underwear poking out the top. While at the same time I see women that are about 4' tall and weigh in at about 700 pounds wearing pants that look like they were applied with a spray can. What am I missing?