GRACE KARINWomen High Elastic Waist Pleated Chiffon Skirt Midi Swing A-line Skirts

How long is the skirt in inches?

Do the pleats stay nicely pleated after washing?

My waist is 40 Inches around, what size will fit comfortably? I'm afraid of getting too big of a size.

Does this skirt flatten around the buttocks area if sitting for a good portion of the day? I work in an office setting where I'm up and down all day.