Its a pretty huge skirt that's what it is. This is our current project at work, an orange skirt, corset, shrug, jacket and wings for a Venetian ball. The lady is a UK size 10, so rather slim, but the skirt is HUGE!
It was stitched together at the seams, then I hand sewed the 15 meter fake hem. I thought it would be a job to spread out over about 4 days, 3 panels here 3 panels there so I didn't go insane, but it turns out I find hem sewing oddly therapeutic and I knocked it all out in a day.
So, waist band on, and layered on top of a large crinoline and a 3 layer tiered nett skirt, and Tah-Dah! Happy days.