LONDON, July 7, 2016 (Xinhua) -- Britain's Duchess of Cambridge Catherine (2nd L, Front) applaudes in the Royal Box during the women's singles semifinal between Serena Williams of the United States and Elena Vesnina of Russia on Day 10 at the Championships Wimbledon 2016 in London, Britain on July 7, 2016. Serena Williams advanced to the final after defeating Elena Vesnina with 6-2, 6-0 in 48 minutes. (Xinhua/Han Yan)
