Five Seconds of Summer have a lot to celebrate this week, as not only has their UK tour kicked off now, but their second album has reached one million sales worldwide.

The follow up to their self-titled debut album, ‘Sounds Good Feels Good’, was released last October, and the lads have recently been awarded a plaque to commemorate their latest achievement.

5 Seconds of Summer uploaded a photo of themselves holding their plaques on their official Instragram page with a caption saying: 

"We were given these plaques yesterday for Sounds Good Feels Good selling 1 million copies worldwide. incredible way to start the UK tour; thank you all."

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Watch 5SOS being interviewed recently, below: