Omelianchik was a member of the first place Soviet team at the 1985 World Gymnastics Championships in Montreal, but struggled in the team competition and did not qualify for the all-around final. However, Soviet team officials decided to pull Olga Mostepanova and Irina Baraksanova, who had both qualified for the finals, and substitute Omelianchik and her teammate Shushunova. The decision proved to be sound; the two Soviet gymnasts tied for the all-around gold and became Worlds co-champions. In the event finals, Omelianchik won the floor gold medal with her "Birdie" exercise, which would become her most well-known routine.