Somebody call the calvary?
I vote for a plain but full skirt, and a corset with embroidery and trapunto in a design of her choice. That way her daughter or granddaughter can wear it.... In silk of course, dupioni silk. Or leather. Cool. PVC. One of my year 11s did a punk style dress in red vinyl. It was beautiful.
Lots of silk is easy to get in London. Berwick street. A corset will be about 1.5 meters, with some to spare. For bows! £25 or less.
The corset can lace up the back. or close with a busk in the front. Now the only question is the style: victorian or 18th century? Tabs or no tabs?? Straps. Off the shoulder or spaghetti?
No wait, that's more than one question.
Can you tell I am frustrated with Year 7 tie-dye drawstring bags?
??
Never fear, Vicky, we'll get you to the church on time!