The kneehole vanity earned its shape from a simple observation: you sit at a dressing table, and sitting requires somewhere for your knees to go. Once the centre is hollowed out, the storage has to migrate to the sides, and that migration is what produced the twin-pedestal form that has stayed in use for well over two centuries.
What changed over that time is how the pedestals are treated. Early versions were plain boxes and the piece looked like a desk. The bombe line on this one - the outward swell through the middle of each pedestal, returning inward at the foot - is what removes that heaviness. It is also the hardest part to build, because the curve has to be carved from thick solid stock rather than bent, and both pedestals must swell identically or the eye catches it instantly.
Our artisans shape the two sides in parallel, working from the same stock so the grain runs alike, and check them against each other continuously as the curve develops. The carved scroll feet are cut last, once the pedestal profile is settled, so the foot flows out of the curve instead of being applied to the bottom of it.