“The Devil Wears Prada 2” costume designer Molly Rogers shared some of the behind-the-scenes struggles involving the movie’s wardrobe. Walt Disney Studios If you want it done, send Meryl Streep. Miranda Priestly is one of fiction’s most intimidating — and fashionable — characters, so it stands to reason that the actress playing her would need to defend her sartorial choices on occasion. In a panel discussion at Fashionphile’s headquarters in NYC, costume designer Molly Rogers revealed some of the behind-the-scenes clashes that went on in the wardrobe department. One particular look, a tasseled Dries Van Noten jacket, was apparently a controversial pick. “The tassel jacket needed the right scene, it couldn’t just show up,” Rogers said. “The studio was afraid of that jacket — they tried to kill it.” One particular look — a Dries Van Noten tassel jacket — sparked controversy, with Meryl Streep herself ultimately helping the studio see why it was an important addition.…