I knitted it with the Euroflax Linen in colorway French blue (3 skeins). It was a pretty fast knit although the stockinette parts seemed a bit boring at times and I wanted to finish them as fast as I could. I enjoyed the lace parts very much. They are very easy to knit. Here is a close-up of the lower lace panel.
I knitted the back first with the lenghts as given in the instructions and was very worried that I didn't have enough yarn. After I used up the complete first skein and got almost up to the upper lace panel, however, I knew I would have enough yarn to make the nightie a bit longer which I preferred. So I knitted the front 3'' inches longer. When that was finished I lenghtened the back by taking out a row of knitting about 1" up from the lace panel. I knitted another 3" up from the bottom and then grafted the upper and lower piece back together. After washing the nightie the grafting line is not visible at all. 
I couldn't get bra straps at my local fabric store and I attached satin ribbons instead. I am very happy with the way this nightie turned out.
