I'm just starting a new quilt. 10 fabrics, 8 from Connecting Threads, 1 from LQS and 1 recycled shirt (it was the right color!). I washed & dried everything. I measured everything before I started. The CT fabric was the same size both before & after (so was the shirt ;-) ) The LQS fabric however, shrunk 1" per yard length wise and almost 1 1/2" width wise!! If I had just pieced it, with the LQS fabric shrinking at a different rate, the whole quilt top would have been distorted, especially since it made up about half the quilt pattern in this case.