Just to give you a quick impression of what Yemenis look like. That is, Yemeni men, of course. I can't really say that I've seen a Yemeni woman yet. Although the there are no strict laws on the covering-up of women, the only ones who are not covered completely (i.e. where the face can be seen and only the rest of the body is hidden under a black cloth), are the ones of African origin. Yemen being at the bottom of the Arabian peninsula and on the Red Sea, Sudan, Ethiopia and Eritrea aren't far away at all and one can definitely spot a considerable part of the population with African origins.
So the men wear the thaub (the long dress, which in Egypt they call Jalabia), a Jacket, the scarf (on the head as a turban or over the shoulders) and the famous Jambia, (the traditional dagger) which is attached to a wide, beautifully decorated belt. The most prestigious Jambias have a hilt made of rhinoceros horn. But don't blame the Yemenis for that poor animal's extinction, they're only the one's buying the horn after all (so they all argue).