Measurements provided in the pattern are of the finished piece, not the body measurements and od a piece laid flat, however it is super stretchy due to the stitch.

Yarn used for this top is by Gazzal Superwash Merino Wool in weight Fine (2), but other brand yarns in the same weight group such as Hobbii Friends Extra Fine Merino or Knitting for Olive merino yarn will also work great.