Now I understand. Now I am going to be a bit clearer too.
It is not that her hair is worn long, it is the hair itself, it never seems to shine, at least in the photos I have seen (perhaps I missed out). For formal occasions I personally like to see hair worn up, but Rania wears it down and beautifully.
No one can help the wind blowing and tousling locks but if they are shiny and have a well cared for look to them then no problem.
Kate obviously spends a lot on clothes, she needs to find a good hairdresser, not necessarily a stylist but someone to show her how to look after her hair, which is so thick it makes me feel quite jealous, fine hair is no fun at all, but there is so much that can be done with lovely thick hair like hers.