Sourcing a button-down with the perfect fit is never an easy task. You’ve got to consider length, silhouette, fabrication, button spacing, collar style—the list goes on. And if you wear an “in-between” or plus size, the task can be even tricker. When in doubt, we recommend sizing up—as a general rule, it’s easier to take fabric away than to add it, and this is also true if you plan to tuck your shirt into trousers or a skirt. Secondly, we recommend opting for fabrics with a bit of give. Anything with from 1% to 5% spandex, jersey, or elastane will give you a bit more mobility and help reduce that dreaded gap between buttons. Lastly (and this may seem unrelated), investing is a quality seamless bra will make a huge difference in the fit of your tops, particularly for busty ladies. Keep these tips in mind, and keep scrolling to shop our top picks.