I've suggested some suitable Christmas gifts for fashionistas already (see this, this and this, for instance) but here is another tip if you are shopping for someone who is really into fashion:
A set of 6 Russian dolls by Lanvin
I've always loved Russian dolls, and I even have 2 sets at home. But none of them are fashion themed, so this would make a great addition to my collection. But I think it is an amazing present even if someone doesn't have any Russian dolls already, to be honest.