Clothing is often forgotten in historical works, despite being important to every era; even a cursory examination of period fashion can enliven, and provide context for, other reading.
If you want to know how the wealthier women of Marie's court dressed, this annotated selection of sketches, each depicting a dress or costume, will be quite revealing. The only problem is a lack of colour: the pictures are in black and white.
This site hosts all the full colour plates from Braun & Schneider’s The History of Costume
, published between 1861-1880. There is no annotation, but the pictures are excellent and wide-ranging.