The long-awaited sequel features over 40 cameos.Anne Hathaway, Stanley Tucci, Meryl Streep and Emily Blunt at 'The Devil Wears Prada 2' premiere.Credit: Mike Coppola/Getty Images for 20th Century StudiosThe GistThe Devil Wears Prada 2 features over 40 cameos by celebrities, journalists, athletes, fashion industry insiders, and other creatives.Among the most notable cameos is Lady Gaga’s performance as herself during Milan Fashion Week.Knicks sta…