Celebrity·Posted on Jul 8, 2014This Is How Much The Boys Of One Direction Have Changed In Just Four YearsThe hair goes up and down and moves all around.by Lauren YapalaterBuzzFeed StaffLinkFacebookPinterestTwitterMail Harry Styles ← Slide → Liam Payne ← Slide → Zayn Malik ← Slide → Niall Horan ← Slide → Louis Tomlinson ← Slide →