Anthony Vaccarello is the man responsible for slits in clothes that defy all logic and perhaps sanity.
The gowns seem to work by having lots of strategic elastic bands and underwear-like structures within. So Anja Rubik can go out and show her hip bone but not anything... southeast of that.
He also dressed J. Lo in this wackiness for the Grammys.
It carries the dubiously honorable distinction of looking at once incredibly comfortable and incredibly dangerous, both in the "is she going to flash us?" and "is she going to trip and eat it?" departments.
Overall, Vaccarello has a distinct, sexy, very cool aesthetic as a designer, producing the kinds of things every woman wants but pretty much no one with a semblance of a normal life can wear.