I know it's been mentioned Ginger, but have you tried Ann Taylor? They have a wide range of sizes (I believe starting at a 2) and interested shoppers can find things for petites, average, and tall. You can shop AT online as well. I really love AT but I find that their pants can be a little more "mature" and a bit "high waisted" for my taste, but their suits, dresses, and tops are great and incredibly well made.
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