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US gymnast Simone Biles with her fingernails painted in the US flag, prepares to compete in the Uneven Bars event during the women's team final Artistic Gymnastics at the Olympic Arena during the Rio 2016 Olympic Games in Rio de Janeiro on August 9, 2016. / AFP / Ben STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

US gymnast Simone Biles with her fingernails painted in the US flag, prepares to compete in the Uneven Bars event during the women's team final Artistic Gymnastics at the Olympic Arena during the Rio 2016 Olympic Games in Rio de Janeiro on August 9, 2016. / AFP / Ben STANSALL        (Photo credit should read BEN STANSALL/AFP/Getty Images)