Anne Hathaway has certainly made Andy Sachs proud on The Devil Wears Prada 2 press tour . But she saved the most special homage for last: On April 29, Hathaway traded custom Louis Vuitton or Versace for that green, leopard-trimmed coat seen in the first film. (You know the one.) Despite having access to one of Hollywood's most coveted costume archives, Hathaway has only worn custom or fresh-from-the-runway designs this month. Turns out, she was just saving her vintage pull for the right moment—and one of the press tour's final nights. After her Tonight Show Starring Jimmy Fallon interview, Hathaway was all smiles wearing the opening coat in The Devil Wears Prada's post-makeover montage . (I'd be beaming too, if I pulled off a recreation this iconic.) "Vogue" by Madonna seemed to be playing in Hathaway's head, while she flaunted its leopard-print collar, matching cuffs, and emerald wool, all still in pristine condition.…