Resurfaced photos of Taylor Swift attending a movie premiere in 2009 in Sydney with Hollywood star Zac Efron have gone viral.

News site Pop Sugar Au shared the photos to Instagram on Monday, which captured a 19-year-old Swift posing up a storm with a young Efron.

Taylor looked absolutely radiant in a beige shoulderless designer gown featuring crystal beads, as she smiled alongside Zac at the premiere of his film 17 Again.

‘On this day 15 years ago, Taylor Swift and Zac Efron attended the Sydney premiere of 17 Again at Hoyts Entertainment Quarter. Truly, what a time to be alive!⁠’ they wrote next to the snaps.

Swift and Efron, 36, have been close friends for years and appeared together in the 2012 Dr. Seuss animated movie The Lorax.

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Resurfaced photos of Taylor Swift attending a film premiere in 2009 in Sydney with Hollywood star Zac Efron have gone viral. News site Pop Sugar Au shared the photos to their Instagram, which capture a 19-year-old Swift posing up a storm with a young Efron. Both pictured

In 2009, Swift, 34, was touring her Fearless album across the country and performed on a much smaller and more intimate scale than her recent extravagant Eras Tour Australian shows.

Last month, the Aussie leg of record-breaking Eras Tour ended with a bang in Sydney, and the pop star pocketed an astronomical amount of money sum for both herself – and the NSW economy.

The pop sensation reportedly earned $25million per Sydney show, meaning she took home $100 million after four concerts at Accor Stadium.

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Taylor looks absolutely radiant in a beige shoulderless designer gown featuring crystal beads, as she smiles alongside Zac at the premiere of his film 17 Again

Swift also injected a whopping $145 into the NSW economy, as thousands of local and interstate fans flocked to the city for the must-see event of the year.

In Victoria, Swift injected a whopping $174million into the state economy after her three Melbourne shows.

Thousands of fans splashed out a collective $86m in the accommodation, hospitality and tourism sector, with CBD spending up 30% compared to the previous month.

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‘On this day 15 years ago, Taylor Swift and Zac Efron attended the Sydney premiere of 17 Again at Hoyts Entertainment Quarter. Truly, what a time to be alive!⁠’ they wrote next to the snaps

It comes as Swift finished her run of Sydney concerts on Monday evening.

She sent off the crowd with some very warm words, leaving the audience cheering in delight.

‘Looking at this crowd, the biggest crowd we’ve had at our four shows here!’ she told her fans.

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Swift and Efron, 36, have been close friends for years and appeared together in the 2012 Dr. Seuss animated movie The Lorax