Abstract: The subject of the study is the vocabulary borrowed from the Russian language. The object of the study is the vocabulary denoting the names of pieces of clothes of Olonkho Epic. The aim of the article is to identify the borrowings denoting pieces of clothes, in the course of which the following issues are solved: determination of the composition of the borrowed vocabulary of the names of clothes; general characteristics of thematic groups; consideration of the features of their functioning in the Olonkho epic. The primary attention is paid to the determination of the factors of penetration of lexical borrowings into the Olonkho language space. The study uses various methods of linguistic analysis: the method of continuous sampling, comparison, and descriptive method.The methodological basis of the study was the works of scientists on lexicology and linguostylistics: D. N. Shmeleva, L. P. Krysin, P. A. Sleptsov, A. T. Hrolenko.The specificity of the functioning of words of foreign origin in a folklore work remains an insufficiently studied object of research, which led to the novelty of the study. The main factors of penetration of lexical borrowings into the Olonkho epic space are alliteration and assonance. Since in the description of the portrait of the Olonkho hero the most important role belongs to his attire, the detailed description of his clothes also served as the basis for the appearance of lexical borrowings in the Olonkho epic.