London 2012 - Team USA's Claire Donahue in the pool at the Aquatics Centre after the women's 100m butterfly final.
London 2012 - Sarah Sjostrom of Sweden walks out to take her place in the Women's 100m butterfly final at the Aquatics Centre, in which she came fourth.
London 2012 - women's 100m butterfly bronze medallist Alicia Coutts of Australia and second-placed Ying Lu of China flank winner Dana Vollmer of the USA on the podium at the Aquatics Centre.
London 2012 - USA swimmer Dana Vollmer powered to victory in the 100m butterfly, setting a world record and bagging a second swimming gold medal for America.
London 2012 - women's 100m gold medallist Dana Vollmer makes a splash at the Aquatics Centre even before the race has started
London 2012 - Team USA's Dana Vollmer stretches ahead of taking gold in the the women's 100m butterfly. It was a second taste of gold for Vollmer, a member of the champion USA 4x200m freestyle relay team at Athens 2004.