LONDON: Jessie J revealed she felt “less than humble” as she headlined the 2013 iTunes festival. The Price Tag singer, wearing white skintight hot pants and crop top, performed at the Roundhouse in Camden, on the day her second album Alive was released.  Watched by fellow Voice judge and Chipmunk, the 25-year-old was joined by US singer Brandy for a duet on new track Conquer The World. Dizzee Rascal, who is due to perform at the festival on September 27, also joined her on stage for Wild.  Jessie admitted: “This is a very special night for me, and a very special place for me to play my new songs.”–BT