Kelly Clarkson has advice for Taylor Swift, Post Malone gets ready to conquer the Billboard Hot 100 and Green Day links up with Fallout Boy and Weezer for a global tour. This is Billboard News Now, rounding out the top stories for Tuesday, September 10th.\n For information regarding your data privacy, visit acast.com/privacy\nLearn more about your ad choices. Visit megaphone.fm/adchoices