I just wanted to throw out there that it seems like the act of drying, whether air dry or dryer, shrinks cotton. Like Rubino said, she had only washed it in cold and air dried it and the it shrank in length. I think that has been a lot of our experiences right there. Of course making gi buying even more difficult because we're gonna sweat in it and it's gonna dry and it's gonna shrink.
For more than you ever wanted to know about cotton shrinkage see Page 3 "Drying shrinkage" of this document: