Sir Ian McKellen just proved for the billionth time how awesome he is…could his latest act earn him an invite to become Taylor Swift ‘s next onstage celebrity guest? The 76-year-old British X-Men, The Lord of the Rings and The Hobbit star, known for his sense of humor, gave a grand “performance,” or rather, dramatic reading of the 25-year-old pop star’s latest hit, “Bad Blood,” in a video posted on Yahoo! this week, just ahead of the release of his latest movie Mr. Holmes. He plays title character Sherlock Holmes in the film, which hits theaters on Friday.