advice please!

If you are not aware, one of the things you get to do as a military wife is attend "balls" with your husband. It's actually kind of exciting to think about getting all dressed up and fancy, especially in this day-and-age where there aren't many opportunities after prom to do that.

BUT, it means actually getting fancy. And I don't know about you, but I don't have a closetful of fancy dresses just awaiting use.

Rob has a ball coming up in a couple weeks and since I skipped the past two and made him go by himself I'm going with him this time. (aren't I such a loving wife?)

The only problem is, I don't know what to wear. And I really don't feel like buying a new dress and don't have time to make one.

I do have this one in my closet, however:
I had bought it for a cocktail event back at Ft. Sill, but ended up not going 'cause Nick was only a couple months old and I didn't want to leave him with a complete stranger.

So my question is, Do you think it's fancy enough for a ball?

I have some snazzy wing-tip heels to wear with it, and I'm planning on having some fancy hair to go with it. What do you think? I know it's nowhere near red carpet fanciness, but do you think it's ok for a military ball?