Devil in a blue... I mean RED dress. Oh nevermind

Hooray! I am happy to say that I am officially done with Fall Quarter 2010 and am off to my wonderful 5 week break. I received 3 A's and 2 B's for the quarter (of which I'm quite surprised to see I did so well).

Now that my break has begun, I'm delving into new projects each day. Right now I'm dealing with a red dress that's being fussy.

The dress is a performance dress for the choir I am the accompanist and assistant director of. Our school colors are Red, Black and Grey; which was all I had to choose from. I bought my red dress from a consignment shop for $19 bucks and I figured I could just alter it to fit me, add some sleeves and be done with it. At the time I was a size 6 (the dress being a small 9/10 wouldn't have been that hard to alter) Well, not to toot my own horn, but I've lost a little bit of weight, bringing me down to a solid size 4. Oh goody for me.  As you see in the picture, it is now quite gappy in a few areas.

I also want to add sleeves to the dress since I am technically a representative of the school and probably shouldn't be too revealed. Though, I'm not sure what kind of sleeves just yet. The girls in the choir said I should do a sleeve like this:

the sleeves would be slightly smaller in width

Yet my mom says I should do something more like this:

A much more matronly look

but maybe bigger drape thing like this:

EVEN MORE MATRONLY :D

What do you all think I should do? I'm at a loss