Harry Styles replies to Emma Watson's tweet, after he walked out halfway through her new film, The Perks of Being a Wallflower. Report by Melissa Nathoo. Like us on Facebook at http://www.facebook.com/theshowbiz411 and follow us on Twitter at http://twitter.com/theshowbiz411 . Subscribe to The Showbiz 411! http://www.youtube.com/subscription_center?add_user=itn