From left, U.S designer Tina Knowles and U.S singer Beyonce Knowles, launch their collection House of Dereon, featuring both the Autum-Winter and Summer 2011 collections, in London, during London ... more 
From left, U.S designer Tina Knowles and U.S singer Beyonce Knowles, launch their collection House of Dereon, featuring both the Autum-Winter and Summer 2011 collections, in London, during London Fashion week, Saturday, Sept. 17, 2011. (AP Photo/Jonathan Short) less 
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Associated Press | Photo By Jonathan Short
Sat, Sep 17, 2011 5:48 PM EDT