WHAT'S HOT Peep-toe flats Prada is leading the way and the rest shall follow. Jumpsuits (right) Go space age with Lanvin's styles or, for the less adventurous, try overalls as a stylish alternative. Waterproof fabrics They are integral to the futuristic look, but choose luxurious, technical blends rather than cheap ones. WHAT'S NOT Fingerless gloves Even Karl Lagerfeld can't get away with them. Metallic nail polish It always looks tacky. Shaved heads Demi Moore and Sinead O'Connor got it right; Britney Spears (right) did not.