First of all: The bottle is really a great idea, but the "Cloud" that the bottle stands in is made of hard rubber (or something similar) and rather puts me off. So the perfume stands in my collection without the Cloud, which might be more visually appealing for younger girls, but isn't very practical.
The scent disappointed me a bit. It smells, as already described here, like smoky cotton candy and isn't something I would directly call a "women's fragrance" nor is it a scent that enchants, surprises, or prompts the question about what perfume is being worn today. For a fragrance that carries Ariana Grande's name, it's rather lackluster and disappointing.
Of course, you can still wear Cloud, but it's just nothing special. Above all, I miss a clear statement from this fragrance. The sillage and longevity are surprisingly good, but that's also due to the very sweet scent characteristic.