I don't think its nighty-ish at all, I really like it. Do you know what, Pronuptia have got some lovely dresses on their website.
I was looking earlier as we are going to a wedding next week and I was trying to guess which dress the bride has chosen. Yes, I clearly have far too much time on my hands.
Maggie Sottero usually have some lovely dresses, as do Alan Hannah and Suzanne Neville.