What a fabulous idea!! I love it. I have long wanted to knit either Sonnet
or Sitcom Chic from Knitty, or perhaps I should try Tricot
And, Ingrid, I love the idea of using a favorite sweater/top for measurements. I read that somewhere, too, and it seems really practical.
Well, this just may change the focus for my shopping trip to Wool & Co. this week. ;-) I'll need to pick out yarn for my sweater now!