Most underwear comes as part of a set. If the words that come before "bra" or "panties" match, then it's probably a matching set.So how exactly does the underwear check work? I have absolutely no idea and always seem to be doing something wrong, even while wearing stuff that seems like it would match.
Tbh, I would suggest that you don't get too "creative" with it at work. Save that for your free time.
Wear pink pantihose + pink satin bra + pink satin panties until you have access to the sissy set Antlers provides. That set can pretty much take you through the rest of the game.