Taylor Swift Jets From LA to London, Prepping for Major Screen Time

Taylor Swift is getting ready for music's biggest night and for what could be her biggest acting gig to date. The country superstar followed her trip to the Sundance Film Festival in Utah with a short plane ride to Los Angeles this week, where she filmed television promos for the 2012 Grammy Awards alongside rapper/actor LL Cool J, who is hosting the Feb. 11 broadcast.

Four-time Grammy winner Taylor is set to perform on the show, though it's not yet been revealed what song she'll sing. She's up for three of the coveted gold gramophones this year: Country Album of the Year for 'Speak Now,' and Best Country Song and Best Country Solo Performance for 'Mean.'

The 22-year-old beauty is now in London, where she was spotted Monday (Jan. 23) visiting the offices of Cameron Mackintosh, the renowned theater producer of shows such as 'Cats,' 'The Phantom of the Opera' and 'Les Miserables.' This, of course, adds even more fuel to rumors that Taylor has scored the role of Eponine in the movie version of 'Les Miserables.'

Her trip across the pond isn't all business, as Taylor has also been snapped by British paparazzi shopping and visiting the Diana, Princess of Wales Memorial Fountain in Hyde Park. (See a photo of her rainy day park visit below.)