Periodic reminder from me that you can just get clothes for whatever size your body is. If you'd be more comfortable in a larger size, please do that. Wear whatever underwear you want, don't ever believe social media suggestions that you have to match, be sexy, wear thongs, whatever is the case. Same goes for any of your personal grooming. Who you are is not invalidated by any of that, no matter who you are, what gender you are, etc.
@aetataureate 100% this. Fashion is a social game you can choose to play or not, at whatever level you want. If you like following fashion rules and keeping up with trends, great! Do that and have fun! If you would rather (like me) make a uniform for yourself out of a few pieces that fit great that you buy in every color, also great! Do that and have fun!