Yes it's a pattern. Basically you make your own fabric. You take a bunch of fat quarters and cut them into various sized lengths but keep the width measurement the same. You start making strips then add the strips together. Ultimately you make 3 big pieces. You machine quilt them then wash them. Are you tired yet reading this? It is alot of work! You use these 3 pieces to lay out the coat pattern on. Once you cut out all the pieces (sleeves, front, back, collar, etc.), you can then couch decorative yarns on top of each piece. Still not tired? Then you sew the coat together.
You can get the pattern here:
http://www.rag-merchant.com/proddetail.php?prod=RM076&PHPSESSID=302c3ad17bc4181fcaaecd032f2e2881
Enjoy.
BJ/NYC