After emigrating to the United States, Koroleva began participating in synchronized swimming, and competed at Stanford University.

Koroleva was born on April 10, 1990, in Yaroslavl, Russian SFSR, Soviet Union, to Svetlana and Nikolay Korolev, and later emigrated with her family to the United States, settling in Concord, California.

[1] Shortly before the 2011 Pan American Games in Guadalajara, Mexico, she was partnered with Mary Killman to compete as a duet.

[2] Koroleva was one of three University of San Francisco students to compete in the 2016 Summer Olympics, joined by Israeli long-distance runner Maor Tiyouri and Venezuelan basketball player John Cox.

[4] Koroleva resides in the Bay Area with her husband and former professional race car driver, Alex Lloyd.