Kosigina began skating to improve her health and took up
ice dancing when she was eight. She competed in novice ice dance with Anatoli Kolisgo and later skated with
Sergey Mozgov, with whom she debuted on the Junior Grand Prix. Her partner left her after the 2009–10 season. Kosigina began skating with
Nikolai Moroshkin in June 2010, coached by
Alexei Gorshkov in Kosigina's hometown of
Odintsovo, near
Moscow. During the 2010–11 season, Kosigina/Moroshkin won bronze at their first
JGP event, in
Courchevel, France. At their second event, in
Dresden, Germany, they won a gold medal. These medals qualified them for the
Junior Grand Prix Final, where they finished sixth. At the
2011 Russian Junior Championships, Kosigina/Moroshkin won the bronze medal and then placed sixth at the
2011 World Junior Championships. Kosigina/Moroshkin competed in the
2011–12 Junior Grand Prix, winning silver in Latvia and bronze in Estonia. They finished fifth at the
2012 Russian Junior Championships and were not assigned to Junior Worlds. Kosigina/Moroshkin received additional coaching from
Igor Shpilband in preparation for the
2012–13 season. They won a pair of silver medals at their events in
Lake Placid, New York, and
Zagreb, Croatia, and finished sixth at the JGP Final in
Sochi, Russia. They then won silver at the
2013 Russian Junior Championships and finished sixth at the
2013 World Junior Championships. Kosigina/Moroshkin finished fourth at the
2014 Russian Junior Championships. Initially first alternates, they joined the Russian team to the
2014 World Junior Championships after
Alexandra Stepanova /
Ivan Bukin withdrew. == Programs ==