I've become a big fan of Luna Luz for clothes that are stylish, comfortable and don't wrinkle too much when flying. I hate to say how many of her dresses I have.
Her things are a bit hard to find (they come from Spain and all the boutiques I buy from have a hard time with them keeping up with orders). I have found a shop in Calistoga and another in Danville (both CA) as well as a few online that have her things.