Halloween is, once more, stealthily creeping up on us, and with it comes the annual business of dressing our little horrors up as something suitably spine-tingling. And in these days of full-blown All Hallows' Eve fervour, there's little chance that said small monsters won't be heading out trick-or-treating or off to a Halloween party. A good costume is, of course, half the fun. But for those of us who don't count ourselves among the crafty camp, happily the shops have once again obliged. Here, then, are our favourite finds for this year's festivities.