Yeah, I think it's in FC's special features. Basically she's wearing a custom made leotard over her torso, with separate silicon appliances glued to her extremities. As for how the original appliance worked, I'm pretty sure her "girly bits" were covered by a similar method, but it was more akin to bikini bottoms than the full leotard.
Makes more practical sense this way, both for the performer and the make-up artists. I did however notice that they appear to have made her shade of blue quite a bit lighter and more saturated than before. I wonder if it's intentional or a product of shooting in 3D? I gather they're still struggling to find ways to compensate for the darkening caused by the Real3D tinted glasses.