Web Reference: Sofia Vladimirovna Vassilieva (born October 22, 1992) is an American actress. Notable roles include portraying the children's book character Eloise in Eloise at the Plaza and Eloise at Christmastime, Ariel DuBois in the TV series Medium, and teenage cancer patient Kate Fitzgerald in the 2009 film adaptation of My Sister's Keeper by Jodi Picoult. Dec 21, 2025 · Sofia Vladimirovna Vassilieva was born in Minneapolis, Minnesota USA, on 22 October 1992 – her zodiac sign is Libra, she holds American nationality, and her ethnicity is Russian. She is an actress and writer, known for The Little Things (2021), Looking for Alaska (2019) and My Sister's Keeper (2009). When she was 3, she started speaking French and reading in Russian and English, being fluent in these three languages. She now enjoys studying Spanish and American Sign Language.
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