Irina Viktorovna Tchachina (also Chashchina or Tchashchina, ; born 24 April 1982) is a retired Russian individual rhythmic gymnast. She is the 2004 Olympic silver medalist in all-around, a two-time (2003, 2005) World all-around bronze medalist, the 2004 European all-around bronze medalist and 2000 Grand Prix Final all-around silver medalist. Personal life Tchachina was born to a Russian family as the eldest of three children. She has a younger brother and sister. In late 2011, Tchachina married Russian businessman Evgeny Arkhipov. Skills in rhythmic gymnastics Tchachina was a technical gymnast. Competitive career Tchachina began training at the age of six in her hometown of Omsk (also the hometown of Galima Shugurova, Evgenia Kanaeva, Tatiana Druchinina, Ksenia Dudkina, Sofya Skomorokh). After she became impressed watching the World Rhythmic Gymnastics Championships on television, her grandfather, a devoted amateur sportsman, took her to a sports school. Her early days were filled with music lessons, swimming and rhythmic gymnastics. Faced with a choice at age 11, she chose gymnastics. She was coached by Vera Shtelbaums and her daughter Elena Arais since the age of five. Her favourite gymnasts are Olena Vitrychenko and Yanina Batyrchina. Tchachina's first victory was at age eight at the Omskaya oblast championship. By age 12 she was a member of Russia's national team and routinely travelled to Moscow to take part in training camps. As a junior, she placed first at the CIS Spatakiada, and won the Russian women's championships twice in a row. In August 1999, Tchachina began training at the Olympic Preparatory School under the guidance of Irina Viner, and around the same time she won the World Championships in Osaka, Japan. In 2001, she won the gold in the hoop and silver in the individual all-around, ball, clubs and rope at the 2001 World Rhythmic Gymnastics Championships in Madrid, Spain, but Tchachina and her teammate Alina Kabaeva tested positive for a banned diuretic and were stripped of their medals. Irina Viner, the Russian head coach, who also served as the Vice President of the FIG Rhythmic Gymnastics Technical Committee at the time, said her gymnasts had been taking a food supplement called "Hyper" containing mild diuretics, which, according to Viner, the gymnasts were taking for pre-menstrual syndrome. When the supply ran out shortly before the Goodwill Games, the team physiotherapist restocked at a local pharmacy. According to Viner, the supplement sold there was fake and contained furosemide.