Harry Styles sent fans into a FRENZY when he joined Stevie Nicks on stage in London to help her perform Stop Draggin’ My Heart Around and Landslide. Following their performance, Stevie Nicks honored her late Fleetwood Mac bandmate Christine McVie, revealing it would’ve been her 81st birthday. #harrystyles #stevienicks #fleetwoodmac #christinemcvie #music #london #bsthydepark #concert #onedirection #celebritynews #celebnews