GIUSEPPE ZANOTTI
Black satin ankle fastening sandals with a heel that measures approximately 120mm / 4.5 inches. Giuseppe Zanotti sandals has a stiletto heel, all-over tonal Swarovski-embellishment, an open toe, cutout detailing at sides, a jagged edge and a zip-fastening at back.
Available at Net-A-Porter.com
B, is rocking these boots very nicely. Her boots are Giuseppe Zanotti ‘s Fall 09 collection, he also has an ankle boot version. I prefer the knee-high look , it’s different.
N.Y.L.A has a similar pair like these Giuseppe’s .They’re hot for summer, and still wearble in the fall. 
Here Monica wear the ankle boot version.