Satine's Gothic Tower Dress from Moulin Rouge is a one piece dress with fur trimmings. It's worn with a *stunning* diamond necklace. The costume galleries on the second disk of the Red Curtain Moulin Rouge DVD are an excellent resource.

Linkage:
My Gothic Tower Dress - in planning stages
Absinth Angel's Gothic Tower Dress - made as a theatre costume so with requisite theatre tricks but still an excellent recreation :)
Traci's Gothic Tower Gown - a lovely costume