Not sure about a floating cake but the vintage chandelier design is really gorgeous. "Wedding cake inspired by a vintage chandelier & this cake floats--it's suspended from the ceiling! Now that's elegant!
I think the bottom layer should have peach fondant, or instead of the flower at top, a third layer with just one pearl strand. but overall a pretty idea. (Coco Chanel Pearl Cake by Lisa Rochelle of Sweet Grace Cake Design )