This bra is not for anyone who is bottom heavy. It slopes too sharply upwards, due to this my boobs try to press down and they cause a crease at the bottom trying to make space for their lower curvature. Also if you have narrow shoulders you may get problems with the straps. When my arms are forward like for driving or typing they press the straps forward and this presses the cups forward and causes gaping at the top of the cup. I think if I did some sewing and moved the straps this could be fixed.
I bought this bra as I was looking for a black plunge T-shirt bra. The material is very soft, although it can be a bit warm during summer. The slightly padded cups are very comfortable and firmly lift my boobs. The only problem with this cup size is that I don't fill the top of the cups. Maybe 34DD would have been better for me. I can still wear it, but it is not a perfect fit.
Those who like the shape the regular Panache Porcelain gives but find the cup shape too "closed" on top (i.e. if it gives you quad boob even in the correct size)) might want to try this plunge version. I can wear it in my regular size w/o any overspill.
The wires are long on the sides and do poke somewhat in the armpit (I'm 5'3", so taller people may not have this issue). Also, the wires are too wide for me, but unfortunately that's true of most bras is my size. They actually aren't quite as wide as the Deco's in the same size.