Some years ago (yup I´m over 30) I read a great article in Vogue UK on girls like Gwyneth Paltrow, India Hicks and other girls that said that while they´re high maintenance, they take pride in don´t letting it show too much.
They take great care of their skins and body, wear "classic" clothes, have impeccable haircuts, cleverly put makeup, but they don´t let it show too much. They manage to have fun and do what they like without letting their appearance get in their way.
I don´t think this is too related with this thread but I think this is more my thing than this althogether "raw" shabby chic.
Nowadays you see too many girls in full makeup and hair perfecly blown with jeans or sweats walking the dog or running errands, and it doesn´t look cool to me.
I think "appropiatedness" is the word, knowing how too look perfect for the ocassion meaning a red carpet or a sunday barbecue with friends. Even if you care about your appearance, and take great care of it, it´s also beautiful to be relaxed and a little messy when it is the right moment.
I wish I could post that article to you. MAybe somebody recongizes it and does for me...