Elegant or Prom?

My mom recently came back from a wedding in Sydney and she got me a dress. On the phone she made it sound really fabulous, "it is a evening dress in a pale sea green color, that goes just below your knees with a matching shawl/scarf. Everyone, even your dad, thinks it is very elegant and gorgeous!" It never occurred to me that I'd want a pale green dress, but seeing as it IS Christmas, maybe it'll be just the thing for a Christmas party!
When I first laid ey es on it, my first reaction was PROM DRESS. The whole pastel color and the jewels at the bodice, with the length ....you got to admit, it's a bit prom like. If not prom like, then at least bridesmaid like. Or just... kind of old (esp with the matching shawl). Don't get me wrong. I love my mom for remembering me on her holiday and buying be stuff out of the blue. I DO know how lucky I am and I do appreciate the gesture. And as much as I am complaining now, I will probably end up wearing it. This is just not something I'd pick on my own... I'd probably pick something more vibrant with funkier jewels, more modern. As an economist, I'm always thinking about opportunity cost.

Having stared at it for quite some time now though, I'm starting to come around to it a bit. The pale sea green color and simple bodice design can be considered as goddess-like and elegant. And while it is not modern, I guess it is classic. I can't go too wrong in a classic dress, right?