I made two dresses basically. A sheer one and a solid one. The solid one is two pieces so that it can be used for other cosplays/steampunk/daily wear. The outer layer sheer dress is one piece and will have all the dangly trailing parts. The skirt has a train, exaggerating how Morticia looks (especially in the original comic) like she rises as a shadow out of the ground.
I'm using a styled (slightly straightened/pushed back) Arda Ferrari in dark purple.
Awards
Hall Cosplay Best Over-all (Beginners) Nebraskon 2011