A Taylor Swift concert would be worth almost a $100,000,000 to New Zealand.
That's according to Dr Angel Zhong of the Royal Melbourne Institute of Technology who's been crunching the numbers.
It's not only teenagers donning friendship bracelets, sparkly rhinestones and sequins to see Taylor Swift.
There are also plenty of Swifties in their Fifties often with more money to burn than younger fans.
Lisa Owen caught up with one of them after she got home from Taylor Swift's Melbourne show.
