This content is copyright of CelebMix.com. Mighty Hoopla will be returning to London's Brockwell Park on May 30-31, and the initial line up has been announced. Headlining the Saturday will be none other than Lily Allen, in a UK festival exclusive where she'll be performing her brand new album West End Girl. She will be joined by Jessie J, Todrick Hall, JLS, and Horse Meat Disco. Also announced for the Saturday so far are Agnes, Appleton, Empress of, Heather Small, House Gospel Choir (DJ set), Lucy Spraggan, Mae Muller, DJ Paulette, Say Now, The Artful Dodger and Tulisa.