Russian series (Чистые), but Urszula is Polish.
In 1903 St. Petersburg, Kseniya and Stesha are forced into prostitution. Trapped by their controller, they find solace in their inner strength and yearning for freedom, which may help them escape their dire circumstances.
Nudografia has more from this series and her previous nude appearance
Charlotte Campana in La vie sauvage (FR 2017)
Random find, is there any country other than the French which put a 5 minute nude scene in a movie?