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<p>Most stores like Nordstrom’s will have a tailor on-site who will fit you to the suit for free (or at a reduced cost). If you shop at a discount chain, just take it to a tailor and have it fit (Google search for a local tailor). It takes less than a week and doesn’t really cost that much. This is what people who frequently wear suits normally do. If you also know to do that, it gives the impression that you wear suits frequently, which is a sign of maturity (there are many places outside of work where you wear a suit as an adult).</p>
<p>Walking into an interview with a very baggy suit makes you look like you don’t own a suit and are borrowing your big brother’s or your father’s and gives a negative first impression. If I expect that you’re immature, I look for signs of immaturity in the interview. That’s not what you want.</p>
<p>I’ve actually seen people outright rejected for jobs and others hired based on the suit they wore. Women are much more likely to judge based on clothes, in my experience.</p>