Katy Perry send Taylor Swift an olive branch just ahead of opening night of Swift's "Reputation" tour. She also sent an apology letter. The two singers have been feuding since 2013-2014, when some of Swift's dancers left her "Red" tour for Perry's "Prism" tour.The note from Perry read, "Hey old friend, I have been doing some reflecting on past miscommunications and hurt feelings between us. I really want to clear the air."Swift talked about receiving the olive branch via Instagram. "So I just got back to my dressing room and found this actual olive branch (from Perry). This means so much to me." She also wrote "Thank you Katy" on the photo.