Hmm, since it has the knot I would try a simple v neck cami--no lace or anything else. I used to think "what is the point of a v neck cami...since it is a v neck?" But I would just adjust it so it is high up enough but follows the neckline of what I'm wearing.

Lace *could* work but I guess I just have a preference for simplicity if the dress already has visual interest.

A V neck cami? My instinctive response would be same as yours. I've never worn one before but now I am curious to see how it will work, so I'll give it a shot. Is there one that you recommend that fits the bust and doesn't constrict the tum?

To be honest I haven't ever worn them! But I have seen a few ladies here wear them to great effect (Kari comes to mind and she is busty as well) I think it works because the v is higher up on the chest, above the boobs. I'm going to check them out at Old Navy tomorrow. I don't really have a problem with camis restricting the tum though so I don't know if my report will be of much help. If they are big enough over the boobs, they will be plenty roomy around the rest of me.

I've added pics of the dress. Is the fit okay? I intend to wear it as a house/go to the store dress.

Great dress but a cami would be MOTG comfortable. I'd try a v neck if you could find one high enough. I could see the lace styles competing with the dress.