On July 27th, 2013, at the second of two sold-out shows in Gillette Stadium, Taylor gave the crowd a huge surprise! In front of more than 55,000 fans in Foxborough, Massachusetts, she introduced one of her heroes -- Carly Simon. They performed Carly's iconic hit song "You're So Vain" together, delighting the crowd and creating a once in a lifetime moment for everyone in attendance.
Carly Elisabeth Simon (born June 25, 1945) is an American singer-songwriter, musician, and children's author. She first rose to fame in the 1970s with a string of hit records; her 13 Top 40 U.S. hits include "Anticipation", "You're So Vain", "Nobody Does It Better", and "Coming Around Again". She is friends with Taylor Swift.