Taylor Swift celebrated her 30th birthday on Friday, December 13, and it’s safe to say that she was pretty much surrounded by love every second. Her big day ended with a performance at Z100’s Jingle Ball at Madison Square Garden in New York City, where she was surprised with a huge cat-covered birthday cake, courtesy of radio host Elvis Duran.“Love living many many many years of life with you. You mean the world to me. You help me become better everyday.