5 Seconds of Summer have uploaded a photo of themselves rehearsing in the nude.

The band have been busy practising their live set recently, but they took to Twitter on Monday (September 8) to admit that it was all getting a bit "boring".

This led to the band, including bassist Calum Hood, getting naked whilst playing with their instruments.

5 Seconds of Summer meanwhile extended their forthcoming UK tour today (September 9).

The band have added an extra show at London's Wembley Arena on June 14 due to high levels of demand.

The dates will come as part of the group's Rock Out With Your Socks Out world tour.

5 Seconds of Summer released their self-titled debut album earlier this year, with the record hitting No.1 in the US.

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Watch 5SOS perform live below: