Strange double/overlayed photos

I wonder if you have HDR turned on? This is High Dynamic Range. HDR means that the camera is able to resolve the difference between very bright and very dark portions of a picture. This sounds really cool, and it can be.

But here's the thing-- HDR works by taking several images at different exposures, and then combining them to extend the range of brightnesses. This is terrific if the camera is on a tripod and nothing moves, but when the camera is handheld, or the subject is moving, you can get multiple images.

I'd say that, if you have HDR enabled, you should turn it off in Settings>Camera>Smart HDR.

(I think the "Smart" part is why you don't get super obvious multiple exposures...)

How are you lighting the scene? Are there several lamps? The double image is looking like a shadow of the chain on the bag. HDR is also making the shadows more prominent. Ou may want to try portrait mode to add additional light, if you cannot control the lamps to avoid shadows in the background.