Polina Eugenyevna Sidikhina was born on October 26, 1988 in Leningrad, Russian SFSR, USSR (now Moscow, Russia) to actors Eugeny Sidikhin (b.1964) and Tatyana Borkovskaya (b.1965). She has two younger sisters, Aglaya Sidikhina (b.1998) and Anfisa Sidikhina (b.2007).