What width, length and colour are you looking for? I've seen it at new Covent Garden flower market and also at a shop that sells dress fabrics. Not sure about cleaning it though!
On the Day Co-Ordination from £450....includes steaming bride's & bridesmaids' dresses if needed, sewing, altering, fixing, tying cravats, pinning on buttonholes, keeping your cards and gifts safe and making sure your day runs as smoothly as possible.
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www.wedding-wonders.com