Wigs in the Early Revolution
The Revolution from the first involved issues of dress. The controversy which surrounded the opening of the Estates-General on 5th May 1789 highlighted the antiquated costumes of the three Estates. As one anonymous deputy remarked, the dress code underlined the puerility of Court etiquette and degraded occasion into a "mascarade indécente". (Quoted Ribeira, p.46). The sombre black uniform of the Third Estate served to underscore its inferior status. Some deputies refused to conform and wore ordinary clothes, even coloured coats. On 15th October 1789 the Constituent Assembly formally voted to abandon all uniform; a few days later the obligation to wear clerical dress was also lifted. David chose to depict participants in the Tennis Court Oath in English style suits and greatcoats. Among the deputies, as on the streets, there was sartorial confusion. The English visitor Mary Berry, wrote of the Assembly in Paris in 1790 that she had never seen "such a set of shabby, ill-dressed, strange-looking people".
Miss Berry's Journal (1865) p.217-8.
Wigs at first remained neutral in meaning. The powdered wig, like the sword, was a symbol of nobility, but it also formed part of the everyday attire of the lawyers and well-to-do bourgeois of the Third Estate. Amy Freund (2008) has studied the series of portraits of deputies engraved by Nicolas-Francois Levachez from 1789 onwards; many posed in their ordinary street clothes; the famous farmer-deputy Michel Gérard affected rural simplicity with his simple brown coat and bare head. However, the majority, still wore wigs or else their own curled and powdered hair.
References
Aileen Ribeiro, Fashion in the French Revolution (Batsford, 1988)
Amy Freund, "The legislative body: print portraits of the National Assembly, 1789-1791", Eighteenth-Century Studies, 2008, Vol. 41(3) p.337-358. https://www.jstor.org/stable/30053554?seq=1
References
Aileen Ribeiro, Fashion in the French Revolution (Batsford, 1988)
Amy Freund, "The legislative body: print portraits of the National Assembly, 1789-1791", Eighteenth-Century Studies, 2008, Vol. 41(3) p.337-358. https://www.jstor.org/stable/30053554?seq=1