This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
ball poster. Watercolor of Princess Zenaida Yusupova at costume ball The party given on February in the Winter Palace was followed two days later by grandiose fancy dress ball Called The Bal it remains the most celebrated festivity arranged in St Petersburg during the reign of Nicholas II the last Emperor of the Romanov House