I agree with Enk. If you could find a bubble-sleeved blouse, it should work.
Also, depending on the color of your undershirt, you should coordinate your socks and shoes according to it. If your undershirt is white, then white socks/shoes would be alright. But if your undershirt is dark colored, then something dark on your feet and legs would work.
I do have a little concern that kinda contradicts with what I said about having white. I think the dress looks best if you can get a kurololi (all-black) look.