I started by looking at perfume bottles and liked the idea of incorporating the drop design of the famous Dior bottle. The first designs were too sci-fi though, so I simplified the it and added classic elements like the columns to emphasize the conservative aspect of the brand as well. With the architecture in place I designed the interior and furniture.
I used the Unreal Engine to prototype the design in 3D to make sure it will work for later production and to test out some lighting situations.
In the end this was rendered in 3ds max.