Can I grab the OP coattails? I also completed the ballet t-shirt awhile back but never posted it.
I used two skeins of Brown Sheep Cotton Fleece and did modify the pattern.
I wanted to a closer fit through the body and a longer length than the pattern gave. So after the decrease row, I knit even to round 58; that was my first increase round. I knit three even, did another increase round, and knit three more rounds even before binding off.
The whole thing took less than 24 hours!