VIDEOSThe couple wrote 'If The World Was Ending' together. PHOTOSMeeting on social media is the new trend. PHOTOSThe ‘Look At Her Now’ singer shared the photo to Instagram. PHOTOSShe collaborated with singer Julia Michaels for the new bop. PHOTOSThe film's cast celebrate the sequel. VIDEOSPlus, find out the ‘Issues’ singer’s secret to slaying it on the red carpet! PHOTOSCamila Cabello, Lorde and host Katy Perry were the targets of some slick comments.