Kozlova found success in two international competitions in 1991. At the World Cup in Bonn, she won a bronze medal with the Soviet team, and at 1991 European Aquatics Championships in Athens, she paired with Olga Sedakova to win the gold medal in the duet routine competition. The Soviet team also captured the team gold medal. Following the breakup of the Soviet Union, twelve of the former Soviet Republics chose to compete together at the 1992 Summer Olympics in Barcelona as the Unified Team. Kozlova was chosen to compete in both competitions contested, solo and duet, the duet again with Sedakova.