With Uliana Donskova, Anastasia Bliznyuk, Alina Makarenko, Anastasia Nazarenko, and Ksenia Dudkina, Sevastyanova won a gold medal at the 2012 Summer Olympics in the group all-around event. They ate only buckwheat for six months leading up to the Olympic Games. Sevastyanova was voted the most beautiful female athlete from the CIS countries participating at the 2012 Olympics. 17,200 people from Russia, Ukraine, Belarus, Kazakhstan, Moldova, Armenia, Azerbaijan, Uzbekistan and Kyrgyzstan took part in the survey. Sevastyanova retired from competition at the age of 17 following the event. She planned to get her college degree at Moscow State University and explore working as a TV presenter or host.