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<p>I have a 9-10" drop (= chest - waist) due to not being obese. Standard US clothing size is nominally for a 6" drop, although it often seems that the clothing is more accommodating of obesity than that. For T-shirts and polo/golf/tennis shirts, it works ok, but they are often tighter in the chest than in the abdomen. For suits and dress shirts, fit is more important to look good (the whole reason one wears suits and dress shirts); alteration by more than 2" is generally not recommended. There exist “athletic fit” suits and dress shirts nominally for 8" drop, but those are nearly impossible to find in stores to try on.</p>
<p>Even without the 6" vs. 8" vs. whatever drop issue, there is also just plain size. Dress clothing stores may stock heavily at 36" to 39" waist for suit trousers, with less selection in the 30" to 32" range (and some of that is cut like hipster skinny jeans).</p>
<p>Since college age men are much less likely to be obese, they are more likely to encounter the same fit issues. (And that is often visible when the come in to interview for internships or first jobs after graduation.)</p>
<p>Here is an article about men’s clothing sizes:
[Slim</a> pickings in a weighty world - The Boston Globe](<a href=“http://www.boston.com/yourlife/fashion/articles/2004/04/10/slim_pickings_in_a_weighty_world/?page=full]Slim”>http://www.boston.com/yourlife/fashion/articles/2004/04/10/slim_pickings_in_a_weighty_world/?page=full)</p>