Harry Styles belts out hits with starstruck Shania Twain at Coachella

pulled out all the stops for his first headline slot at , as he was joined on stage by the legendary Shania Twain in Indio, on Friday.   He promised fans Surprise!Harry Styles, 28, belted out Man! I Feel Like a Woman! alongside a starstruck Shania Twain, 48, as the pair fangirled over each other during his…