5SOS Live At The Summertime Ball 2014

1. The boys got some of the loudest cheers of the night with their performance of 'Don't Stop'.

Picture: PA

2. 5 Seconds Of Summer's Michael Clifford shows off new green hair on stage!

picture: pa

3. 5 Seconds Of Summer cover Katy Perry's huge single 'Teenage Dream' for the Capital crowd.

Picture: PA

4. Michael Clifford shows off his guitar skills as the Summertime Ball crowd cheer 5SOS's performance.

Picture: PA

5. Thousands of screaming fans enjoy 5 Seconds of Summer's setlist.

Picture: PA

6. Calum Hood of 5 Seconds Of Summer shows off his music skills for the Summertime Ball crowd.

Picture: PA

7. 5 Seconds Of Summer make their Capital Summertime Ball debut in style!

Picture: PA

8. There's definitely some 5 Seconds Of Summer megafans in the audience at Wembley...

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9. 5 Seconds Of Summer close their set with hit track 'She Looks So Perfect'.