Military style steampunk gothic brocade frock coat  
A nice contrast of velvet on the chest to create a V shape, folded collar pocket flaps, cuffs, and epaulettes.
Beautiful frog fasteners and decorative silver buttons create an upstanding military look. 
Thin braided trimmings accentuate the shape of the coat to create a slimming look.
Soft pleats in the back gives a flow of elegance.