80,000 fans jumping in unison to David Guetta's 'Work Hard'

This image appears in the gallery:
Summertime Ball 2014: The MUST-SEE Pictures From Our BIGGEST Ball Ever

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

10. 148 images

See the full gallery: Summertime Ball 2014: The MUST-SEE Pictures From Our BIGGEST Ball Ever