Taking place at The Electric Brixton on July 13, Cher Lloyd is first artist that has been announced on the performers line-up.
Lloyd's latest US single, Want U Back, is currently No.11 on the US iTunes chart.
She performed at Hilton's SXSW party in March, and Perez said of the young singer: "We have been supporting her for a long time, the X Factor alum is going to make our London show extra special!
"It's going to be a magical ...
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