Because this article from Wikipedia doesn’t seem to be very clear on the laws.

Sumptuary law Sumptuary laws (from Latin sumptuariae leges) were laws that regulated and reinforced social hierarchies and morals through restrictions on clothing, food, and luxury expenditures. They were an easy way to identify social rank and privilege, and were usually used for social discrimination. This frequently meant preventing commoners from imitating the appearance of aristocrats, and sometimes also to stigmatize disfavored groups. In the Late Middle Ages sumptuary laws were instated as a way for the nobility to cap the conspicuous consumption of the up-and-coming bourgeoisie of medieval cities….

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