Beyonce's Mom Says Daughter's Style Has Always Been 'Edgy'

'It's just a result of her constantly evolving,' Tina Knowles says of the fashion in Beyonce's "I Am ... World Tour" DVD concert special.By Jocelyn Vena





Beyoncé

Photo: Paul Warner/ WireImage




Beyoncé has never been shy about hitting the stage in stunning costumes. Her appearance has always been a mixture of showgirl sparkle and pop star razzle-dazzle. And her style is on full display in her new DVD concert special, "I Am ... World Tour."

Her mom and stylist, Tina Knowles, sai

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