Ankle breakers they might be, but heels like that do an amazing thing to a woman's figure. Really nice job on the photo as I am assuming the original model was not at all flat chested! The upper body curve looks perfect.
No - she wasn't. It's a lot easier to do when it's synthetic material.
You don't really need heels like that to shape - the thing about heels that stretches the leg and tightens the butt is the angle on the ankle - which is all dependent on the difference in the thickness of the heel and sole. 10" heels with 6" platforms shape the same as a pair of 4" heels with no platforms. It just gives her/him heightI'm sure there will be a line wanting to bust his ass