I started piecing the Kaffe Fassett's Shirt-Stripe Boxes quilt last night. I'll have to do some math here - - the pattern calls for twenty 9" blocks, fifty-three 6" blocks, and one hundred thirty 3" blocks. I was able to get 4, 3, and 9 respectively, out of one shirt. (I know there's only 8 three inch blocks there - but I did a major boo-boo trimming one down, so it's in the scrap bucket now.) Of course, I reserved the back of the shirt to piece the quilt backing. I wonder how many shirts I'm going to need?