Would it be going too far to say that Lorde is the biggest act in all of music? Maybe, but not by much. 'Royals' is such a big hit, everyone's singing it, and by everyone, we mean other musicians. 'Royals' is so successful that when people like Jason Derulo, or country music's Craig Campbell (what?) cover the song, it makes headlines. Lorde is still a teenager, but already she's hit the top of the charts in the U.S., her native New Zealand, Canada, Belgium, Iceland, Ireland, Italy, Scottland, Venezuela and the UK. Maybe she is the biggest act in all of music...In 2014, Lorde will be performing in St. Louis!