Looks fab!- good timing, there are a lot of women's wear out lately with frogging down the front.
The buttons look so pretty and the velvet looks luxy- the only thing is I feel it could do with some coloured binding for contrast.
One thing to bear in mind is that overbust corsets have to fit perfectly- otherwise you lift your arms, or jump and BAAAAAAAAAMMM boobies. She might want something underneath for safety.
Also:
http://www.blackmoor.ca/gwimpfcommissar1.htm do you think she knows her top is falling down, or she just doesn't care? - Is her unit to intimidated to give her the heads up? It is a mystery
Dammit now I want a corset for mine- so pretty.