Taylor Swift’s Eras tour is set to become the biggest tour of all time.

From tickets to merch, fans are showing up for Tay Tay and spending the big bucks. Her tours have boosted local economies across the United States and will continue to sell out around the world. Even her relationship with Travis Kelce has helped American Football (NFL) reach a new audience.

You may have heard about this ‘Taylor Swift effect’ or Swiftonomics. Erin Delmore, the BBC’s North America Business Correspondent, crunches the numbers for us.

We also hear from fans who were at the Eras tour film premiere in Los Angeles.

And did you know you can study Taylor Swift at university? Dr Elly McCausland from Ghent University in Belgium tells us more.

Spoiler alert: there aren’t any Taylor songs in here - that’s because we sadly don’t have the rights. Sorry!

Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: William Lee Adams Producers: Emily Horler, Mora Morrison and Benita Barden Editor: Julia Ross-Roy and Simon Peeks

Is Taylor Swift bringing in a new Era of economics? 12:49 Share

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Is Taylor Swift bringing in a new Era of economics?