What's not to love about the Canadian tuxedo? There's nothing better than a truly perfect denims shirt and pair of jeans, so when they come together, it's the perfect sartorial marriage—and an outfit that looks incredibly cool. For Fall 2017, Raf Simons presented the ultimate Americana collection at Calvin Klein filled with plenty of denim to make your own jean-based ensemble, while A.P.C. makes the ultimate in denim jackets that can pull together any outfit.To truly up the It-factor, add in…