Melbourne, Jan 29: Williams sisters have yet again prove their might and emerged on top to lift the Australian Open doubles trophy for the fourth time.
The defending champs, Serena and Venus, defeated Zimbabwe"s Cara Black and America"s Liezel Huber 6-4, 6-3 in the final on Friday, Jan 29.
With this triumph the sisters have totally bagged 11 major doubles titles. They claimed three doubles titles in 2009.
The super siblings had thrashed Slovakian Daniela Hantuchova and Japanese Ai Sugiyama to win the 2009 women"s doubles final in Melbourne.