And it was just a matter of time before he flashed those abs

This image appears in the gallery:
One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015

1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 

10. 171 images

See the full gallery: One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015