Not live by, but I love these:
• "How many cares one loses when one decides not to be something but to be someone."
• "Fashion is not something that exists in dresses only. Fashion is in the sky, in the street, fashion has to do with ideas, the way we live, what is happening."
• "I don't understand how a woman can leave the house without fixing herself up a little - if only out of politeness. And then, you never know, maybe that's the day she has a date with destiny. And it's best to be as pretty as possible for destiny."
• "There is no time for cut-and-dried monotony. There is time for work. And time for love. That leaves no other time."
These are from Coco Chanel.