More money and power = money for food and art -> request to the artist to paint them showing all their luxury, in this case, fat


Obesity was not desired for the look rather the concept. This woman was spoiled with wealth, which appealed to the aristocracy of the time. You can be certain they didnt do it because cellulite resembles marble


Also, they couldnt possibly have been cartoons as artists didnt have time for their own adventures, work was commissioned to them, by the men of these women for example.