This dress is absolutely gorgeous, and it truly pains me to write anything negative about it, though I believe that transparency and honest experiences are so important to relay. Keeping in mind as well, I spend thousands on JessaKae dresses, and am a huge fan with a closet full! So this is coming from someone who knows and adores the brand.
The Coco dress was bought for a friend of mine. She is roughly 5'8", caucuasian, short dark brown hair; size medium. It was bought for an event and we desperately tried to make it work... but it looked like the dress was wearing her, not her wearing the dress. It made her look very frumpy and the structure of the dress did not apply to her body in the way that it does for the models. I'd say you would need to be tall to wear this dress and have it look good, based off of the way the dress sits on the body (I am 6'2" and a 3x for reference).
Not to hate on the other dresses by any means though - that same event I will be donning on the Jasmine dress and I am so excited to! JessaKae has incredible options for their dresses, I just don't recommend the Coco.