For aspiring style icons, knowledge is power. If you aren't keeping up on the trends, you aren't wearing them.
A subscription to a fashion magazine is a sure bet. Marie Claire, Elle and Vogue are excellent choices. Go for the French editions for some wow value -- she doesn't need to speak French to speak French fashion.
Another option: fashion-centric films on DVD, such as "Prêt-a-Porter," "Unzipped," or the ever-delicious "The Devil Wears Prada."
And finally -- she'll never stop thanking you for the No. 1 gift on our list, if you can pull it off…