The Key part of achieving the look is to use a large aperture to make the most of the light leaks from the rear lights. At the back of the studio, between the models and the background, 2 strobes provide the backlighting. This is very important so that the contrast loss/washout that is needed for the effect to be beleivable occurs.
A softbox in front of the models provides fill and a beauty dish with diffuser high above the models provides facial definition and some more fill. Also it give a bit more light intensity to the top of the person with soft fall off.