Ermmm.....I've only seen "hookers" on TV, and yes the girls did look like that. However, I would agree that we shouldn't form judgements based purely on dress sense, though its difficult not to form a judgement when their dress sense is so highly sexualised and revealing.
Secondly, I wouldn't call the girls stupid, but they seemed pretty ignorant of what goes on outside their culture. Their parents seemed to be pretty keen to keep them ignorant so they could retain their gypsy culture. The girls are definitely unambitious. Ambition is about trying to achieve something, whether that be work or status, that is better than what would ordinarily be expected. The girls are expected to get married at a young age. Ambition is not about living up to the normal expectations of the community...ie getting married to someone. The boys seemed to want to continue in their gypsy tradition as well in terms of what kind of work they looked for. For them to be considered ambitious, I think they would have to look further afield, at more education and better jobs. Wanting to provide for one's family is not ambitious. Wanting to better oneself is.