She later continued her studies at the Academy of Theatre and Arts in Russia (GITIS) and graduated with honors from the Gnessin State Musical College in Moscow.

At age 11, she performed "Sous le ciel de Paris" at the French Embassy, where she was noticed by journalist Bernard Pivot who invited her to his program on TV5.

By the time she turned 17 years old, Nizharadze had won several international young singer's contests, including the "Bravo, Bravissimo!"

An open call for songs was launched, and over 100 entries submitted, the broadcasting authorities selected six, that were all performed by her in a national final on 27 February in the Tbilisi Even Hall.

In celebration of her performance at Eurovision, President of Georgia Mikheil Saakashvili suggested that Nizharadze was being considered for appointment as the nation's Minister of Culture.

On December 31, 2021, Mikheil Saakashvili recognized to have an extramarital daughter, Alice Maria, with Sofia Nizharadze, calling her "my most lovely girl and youngest child".