June challenge dress 3 - Fail?

There was a change of plan and I didn't tell you. Do you remember the dresses I chose for the challenge? Turns out I wasn't completely sold on the last two: the shirtdress, I was afraid I wouldn't have  worn it and the one with the peter pan collar needed some adjustements which I hadn't time to make (but maybe I'll still try that pattern in the future). So, after seeing Mathilde's beautiful version of this very simple dress from Burda 05/2010, I decided I could try and make it myself. It's not a silhouette I usually wear (and I still don't know how much I will wear it).

I used a cotton lawn I had in my stash and when I noticed it was going to be too similar to a nightgown, I decided to use grey for the back piece, to create some interest (I love the combination of grey and pink). I modified the button placket on the front piece just sewing the two parts together and putting the buttons as decoration. I was afraid buttonholes would get too stressed over time, since it's a quite snug on the breast area.
The back is very flattering (even on a not-so-fit-looking back like mine). Do you remember I told you I had a very bad sunburn? Here it is:

It would seem that 30+ sunscreen is not enough when hiking. Lesson learnt.
Anyway, I still think it looks too much like a nightgown, although it's much cuter with a cardigan. Please, give me your imput!
Now, just one more dress to go! I hope I'll be able to finish it tomorrow and post photos on Friday. I'll be one day late, but I'm sure you will forgive me. :)

P.s. Isn't that Macaron necklace cute? It' made by the lovely Merylu of Petite Fraise, you can find links to her shops on her blog.