Summertime Ball Line-Up 2014 In Pictures

1. It's time to get 'Happy'! PHARRELL WILLIAMS is heading to the Summertime Ball 2014!

2. The party will REALLY get started once DAVID GUETTA takes to the Wembley Stadium stage

3. Remember... 'Anything Could Happen' now ELLIE GOULDING has joined the #CapitalSTB line-up

4. She can't stop... and now she's heading to the #CapitalSTB too! Welcome MILEY CYRUS to the line-up

5. The PERFECT 'Summer' star to join the Capital Summertime Ball 2014... it's CALVIN HARRIS

6. Look for things to get more than a little SEXY when ENRIQUE IGLESIAS arrives at the Ball

7. She's back! Yes... CHERYL COLE is playing the Capital Summertime Ball 2014

Picture: PA Photos

8. They're one of the BIGGEST new acts of the year... and now 5 SECONDS OF SUMMER are playing the Ball

9. ED SHEERAN will be sure to bring some new songs with him to Wembley Stadium this year

10. Get ready for star power... because RITA ORA's coming to the #CapitalSTB

11. Bring along your dance moves to the Ball... it's time to meet THE VAMPS!

12. She's back at the Ball! JESSIE J returns for the Capital Summertime Ball 2014

13. Man of the moment SAM SMITH is also on the line-up for the #CapitalSTB

14. Get ready for their NEW single! UNION J promise BIG things from their Ball performance

15. Get your 'Salute' at the ready... LITTLE MIX will be at this year's Summertime Ball

16. CLEAN BANDIT will bring their hit-making magic to the #CapitalSTB line-up

17. Bring along your party faces... DUKE DUMONT's got some SERIOUS tunes in store for his set