Adding alittle something

I will probably wear my sister's wedding dress so long as it can be altered to fit my larger breasts and extra 4" in height. But I still want a collar and sleeves. I have seen a few designs for jackets that I have posted previously, and figure that I could get made easy enough but then I saw these sweaters from Anthropologie. They aren't cheap but it would be a lot easier then making something from scratch, not to mention I could where these again.