all maids wear dresses with frills and clean things. the princess' dress also has frills but she does not clean. so it's not the frills that make the maid clean, but it's something else entirely...
It's the headress - a Princess' tiara/crown and a Maids headress are a form of dimorphism. Most princesses will deny it, but they are the same species as a maid—it's why they both possess such degrees of grace, elegance, and dignity—just specialized so the Maid hive has someone to serve.






















