What belt with this dress?

[PopcornFiend]

Help! Do you think a belt would look good with this dress, and if so what colour? Black? Tan? Gold? A bit clueless when it comes to belts.. opinions please!

Doesn't need a belt

She is posing to the side so difficult to tell, I think a belt improves most outfits to be honest, plus defines the waist, a black wide belt I would say, with a buckle colour dependent on your jewellry choice, (I only ever wear silver)