The dress is knitted from Greennary yarn by Hasegawa Corporation. It consists of Silk 14%, Cotton 51%, Rayon 29%, Polyester 6%. The yardage is 290m/100g.
The most important part of the dress is the top one. It is tight around your breast.
The lower part is just hanging down.
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The pattern is available in my Ravelry store:
http://www.ravelry.com/patterns/library/greennary-dress Russian version (Версия на русском)
http://lace-knitting.livejournal.com/2542.html