Everlane Box-Cut Pocket Tee, $18
The very first article I ever wrote for Business Insider was about this perfect, slightly boxy, slightly cropped white T-shirt. That was over a year ago, back when it only cost $16. Everlane has since raised the price by $2, but I keep buying them regardless because a) they're not that expensive even still, and b) they fit like a dream!
I prefer the style with a pocket, but they offer plain pocket-less versions too. The best part is that they're just cropped enough to achieve a perfect front-tuck, which is how I wear my white tees most of the time, and the 100% cotton construction holds up well in the wash. — Sally Kaplan, Insider Picks editor