Yeah, with Sylvia, she is wearing something that looks more like cosplay than anything else. But a maid's uniform, that is clear as day.That might be a freebie with explaining Lin. She's the "help" and being accompanied by her owner. Her chasing you down when kidnapped would have been hampered if she had been seen by an officer though most like. Also when you meet Cornwell it's what... at a park for a speech? He's one of the richest / most influential people in the world, there would have been a police presence yet no one stopped the MC at that time. So we either hand-wave it by or accept that Lin's uniform collar was adequate but Sylvia's was not because it wasn't an actual uniform?
IDK, maybe she is lowjacked (chipped).