Pop star Lily Allen was forced to abandon her trademark prom dress and sneakers at a London gig on Thursday (05Jul07) when she lost her luggage. The Smile singer, who recently designed her own collection of clothes for British high street fashion chain New Look, had to make do with an oversized cardigan and jeans for her set at the House Festival at Chiswick House. She explains, "Someone lost my bags and I haven't got any clothes or make-up."