Burke, Derulo confirmed for Summer Ball

Published Apr 22 2010, 09:33 BST  |  By Robert Copsey

Alexandra Burke and Jason Derulo have been confirmed to perform at this year's Captial FM Summertime Ball.

The two additional acts were confirmed this morning by Captial breakfast show presenters Johnny Vaughan and Lisa Snowdon, who will also host the event in June.

Other acts confirmed to perform at the event include Rihanna, Justin Bieber, Usher, Cheryl Cole, JLS and Ke$ha.

The Summertime Ball takes place at London's Wembley Stadium on Sunday, June 6.