Wanderlust World Wanderlust World No. There is no historical or cultural tradition linking Mexican women's attire—specifically skirts—to Cinco de Mayo.
The holiday marks the Mexican victory over French forces at the Battle of Puebla on 5 May 1862. It is primarily celebrated in Puebla (with parades, reenactments) and has become a broader celebration of Mexican culture in the U.S., but it carries no prescribed dress code.
Regional folk costumes (e.g., china poblana skirt/blouse in Puebla, tehuana dress in Oaxaca) are worn for cultural festivals, folkloric dance, or national holidays like Independence Day (16 September)—not specifically for Cinco de Mayo.