She is the identical twin sister of Tatyana Arntgolts. Olga is 20 minutes younger
than Tatyana.
She and Tatyana are the daughters of Russian theatrical actors Albert Arntgolts and Valentina Galich.
Has 2 children - a daughter Anna Beridze (b.August 15, 2013) with her ex-husband Vakhtang Beridze and a son Akim Petrun (b.December 21, 2016) with her boyfriend Dmitriy Petrun.