BEYONCE [HEARTS] THIERRY: Fragrances have been his main pursuit since shuttering his couture line in 2003, but Thierry Mugler is diving — or rather, dancing — back into fashion via an ambitious collaboration with Beyoncé Knowles. The French designer will take on myriad roles for the singer’s upcoming world tour, which launches in March in Canada. In addition to serving as “creative adviser,” with input on everything from set lighting to choreography, Mugler will direct three segments of the show, called “Dangerously in Love,” “Ave Maria” and the finale. He’ll also costume the production with approximately 58 Mugler creations designed for Beyoncé, the band, back-up dancers and singers. Knowles, who donned a vintage 1997 Mugler dress for the album shoot of her newly released two-disc “I Am Sasha Fierce,” became enamored with the designer after seeing several Mugler pieces exhibited at the Costume Institute’s “Superheroes” exhibit in May.