Choose the items that work best with your outfit. For instance, a t-shirt and jeans would call for a simple bra top and panties or boxer briefs. A dress may require a strapless bra, or no bra at all, depending on the style and cut. If you’ve chosen tight-fitting pants, be aware of possible underwear lines. If you’ve chosen a top that’s somewhat sheer, you may want to also put on a lightweight tank top so that your bra isn’t visible.