The Jonas Brothers are only four dates into their JONAS20 Tour, but they keep upping the ante when it comes to surprise guests.

On Friday, August 15 - less than a week after the band stunned the crowd at New Jersey's MetLife Stadium by bringing out Demi Lovato and Jesse McCartney - Kevin , Joe and Nick Jonas had their Virginia Beach audience losing it once Hanson hit the stage. Surprise!

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Jonas Brothers bring out Hanson to perform mmmbop at their Virginia Beach show #greetingsfromyourhometown #jonasbrothers #hanson ♬ original sound - user7152025x

Not only did Isaac , Taylor and Zac Hanson perform their mega-hit "MMMBop" alongside their fellow band of brothers, but they also joined in on Jonas Brothers' "That's Just the Way We Roll" - a majorly met

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