Abstract: The object of the research is the opera writing by Rimsky-Korsakov through revealing fantasy female characters in the fairy opera tales "Sadko", "The Tale of Tsar Saltan", "Kashchei Immortal", "The Golden Cockerel", and "The Legend of the Invisible City of Kitezh". Man's understanding of the beautiful had always gone hand in hand with art which, in its turn, is one of the finest manifestations of the society's culture as well as an inexhaustible topic for research. In this paper Krapiva investigates the best traditions of Russian opera and imaginative realm of "Beautiful Lady" in the works of Nikolai Rimsky-Korsakov. The author describes common features of idealized images of beautiful ladies in creative works created by poets and philosophers and how these images are shown in the composer's fairy plots. The methodological basis of the research includes the materialistic theory of knowledge. In the course of the research the author has also used general research methods such as analysis, synthesis, historical-artistic, comparative and systems-structural analysis. The author concludes that analysis of the image of "Beautiful Lady" embodied in the fabulous female characters in Rimsky-Korsakov's opera  allows performers (singers and actresses) to come to a better understanding of the vocal part and is necessary for the realization of bright beautiful female characters in opera.