That's a beautiful dress! Can't help with the Cameo label, but I'm pretty sure I've had a dress with that "Aimee" label, and have seen at least one more with it. Mine said "Aimee Jr.," and didn't have the location on it, so I thought that was the design house name. But it looks like that was a store, due to the way the label is stitched in, and Cameo is the maker of your dress.
The dress I had was of very high quality, and your dress looks like it, too. So, other than saying that the store this was carried in must have been pretty upscale, I can't offer any insight.