Some accessories complete an outfit. Others become the outfit. This summer's most covetable bags fall firmly into the latter camp. Whether adorned with cherries, crabs, pineapples or playful slogans, richly beaded, fringed or embroidered, they bring a welcome sense of humour and personality to warm-weather dressing. The beauty of a statement bag is that it does the hard work for you: throw one over a white sundress, linen co-ords or denim shorts and suddenly the whole look feels good to go.