Lena Katina usually known as (Elena Sergeyevna Katina) born on 4 October 1984 in Moscow, Russia) is a member of t.A.T.u.. She is known for being the "good girl" of the duo.

Yulya Olegovna Volkova is a member of the two-girl group t.A.T.u., usually known as Julia Volkova. They are notorious for shocking the public and trying to break taboos by performing on stage in only their underwear. Volkova is known for being the "bad girl" of the group.