The biggest Aussie band of 2014, 5 Seconds of Summer, are taking over the world! Since opening for One Direction, they've hit the big time.
This week they performed on The Today Show which is filmed at the Rockefeller Centre in New York. When fans heard that the band was there, they completely filled the Rockefeller Plaza!
Here's a selfie with one of the TV presenters:

And here's the HUGE crowd of 5 Seconds of Summer fans!