The research of fur fashion, which development closely connected with the factor of demonstrative consumption, conducted on the materials of property inventories of private individuals (Russian aristocracy and townspeople) and family and legal acts accompanying marriages in the XVIII century. The documents of the Romanovs (Peter I and Catherine I, their daughters Elizabeth and Anna, the tsar’s sister Natalia Alexeevna, his first wife Eudocia Lopukhina, tsarevna Anna Ioannovna) have been considered. We also examined the documents of M. P. Gagarin, the Dolgorukov clan, E. I. Naryshkina (married to Razumovskaya), E. R. Vorontsova (married to Dashkova), E. D. Razumovskaya (married to Bestuzhevoy-Rumina), I. P. Golitsynaya (married to Dolgorukova), N. B. Sheremeteva (married to Dolgorukova), D. A. Rimskaya-Korsakova (married to Meshcherskaya), M. Golovkin and others. We analyzed general and special types of fur fashion: outerwear, hats, accessories, interior items, as well as stocks of valuable furs in the homes of Russian aristocracy. The result of this research allows us to the inclusion of these documents in the range of relevant and popular, but still little studied sources on the History of costume and fashion, as well as on the History of demonstrative consumption (History of luxury). Key words: Eighteenth-century Russia, Peter the Great reforms, demonstrative consumption, history of costume, history of fashion, fur fashion.