Beyonce's mum lends Thierry Mugler a hand with her stage costumes

In interviews at the time the partnership between Beyoncé and Mugler was forged, the designer had clearly developed an innate grasp of the peculiar demands of the role: "Sasha Fierce is another aspect of Beyonce’s personality. She is 'Fierce' on stage and 'Beyoncé' in real life. I tried to understand these two sides with my own perception of both aspects; the duality between a woman and a warrior." His extraordinary stage costumes certainly embodied everything that was powerful, fiercesome and outstanding about the performer, with echoes of his sketches for the superheroes exhibition at the MOMA in 2009.

Now it's possible to have a glimpse at the working relationship between the two, in Beyoncé's new DVD 'I am', and the additional services rendered by Tina Knowles. In the footage, taken from the extras package of the DVD, Beyoncé is shown to express strong opinions about her costumes, to the point where she stipulates a black gown is made white for an operatic rendition of Ave Maria. Interestingly, it also shows Mugler's work being re-fashioned by Beyoncé's mother, who made many of her daughter's Destiny's Child era costumes. Tina Knowles is responsible for re-fashioning Mugler's work for the stage. The 'I am' DVD is out now, for those of you who'd like to see how the modifications were received by the gifted, but volatile, designer .

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