One of the most anxiety-inducing moments in adult life has to be the job interview. The only thing that can make the process a bit more bearable is confidence — and that starts with how you look. 

Your expertly crafted résumé might have got you through the door, but now it's all about the presentation — if you've got the chops to rule the boardroom, you need the wardrobe to back it. The key is to invest in a classic suit and then change it up to make it work for you.