11. The Denim Shirt — If you don't already have an awesome denim shirt, fall's the time to find one you love. The best part? They come in almost every single price point. Right now, we're into wearing this button-down with a fancier blazer...or even — shocker — trying the Canadian tuxedo thing.

H&M Denim Shirt, $29.95, available at H&M; Acne Isherwood Flan Dark Blue Shirt, $260, available at Acne.