Or are there times that you just go without, either because you don't need one, or because you just don't want one.
Most Helpful Girl
Pretty much always in public I wear a bra or sportsbra unless its like a quit trip to the store or something. Sometimes I have gone without in a particular dress but that's not that often. At home, I don't usually wear it if I am like being comfy and never wear one to bed or in pjs.1