Richard writes: "Is it good fashion sense to pair up a turtleneck sweater with a sweater vest?" Answer: Good fashion sense? We're not sure that's even possible. And if it is, why stop there? If you can add a third layer too, like a cardigan or something, maybe you can get some kind of grant to study thermal friction between natural fibres. Seriously, though, layering sweaters is way easy to do terribly wrong. Just ask the rather tragic rug-adorned Prada model shown here.