Katy Perry's "Roar" knocked down Robin Thicke's "Blurred Lines" from the Billboard Hot 100. Katy managed to dominate Thicke’s controversial track and rise to the number 1 position with her latest single. <br /><br />For daily dose of entertainment news log on to: http://www.lehren.co <br />Like our Updates: http://www.facebook.com/LehrenEntertainment <br />Follow our tweets: https://twitter.com/lehrentv
