How many more years do you have to go? <a href=" http://vervestudio.com.au/l-theanine-order.pptx ">daylicalm l-theanine 150 mg avis</a> Swift introduced Simon to the crowd by saying, &#8220;Before I bring out my special guest, I have this question that I&#8217;ve always, always had. I think a lot of you have probably had this question too, always wondered what the answer is. Who is this song, &#8216;You&#8217;re So Vain&#8217; by Carly Simon, written about?&#8221; The duo then launched into a duet performance of Simon&#8217;s 1972 hit, which topped the charts for three weeks and has been the subject of intense speculation ever since. You can watch the clip above.