I bought this in anticipation of a few summer holidays ahead and I was not disappointed! I chose the black version (as I had bought another pink dress from Sakka's Store as well) and it fits me quite well. I am around 170cm, 60 kg and have a relatively big bust and was worried that this dress would be too short, as it looks mid-thigh in the photo. But luckily, the shortest part came just above my knee.
There is no need to be afraid that this dress is too short, too sheer or too tight. The belt that comes with the dress is a little short (the bow might look a little strained or just plain little!) but is enough, though there are no belt loops etc. to tie it through. That in itself may be a good or bad thing depending on how you look at it: aesthetically it might look a little strained but size-wise it's comfortable and is obviously flexible and adjustable for a range of waist sizes provided that you don't exceed the actual belt! Having no belt loops also means that you're free to pair the dress with a belt of your own.
The material of the dress is relatively soft to the touch, not incredibly so but not rough or scratchy. And it is not too sheer so absolutely no worries about seeing any underwear (unless it's a windy day!) or VPL (visible panty lines). The only thing that irks me a tiny bit is that bra-wise, I'd have to go strapless or transparent straps - which is completely a personal thing; hence only 4 stars. I expected it anyway from the picture though, which is true to how it looks (length might vary from person to person obviously!).
All in all, it's a very feminine and pretty dress and flattering on most figures. It can be dressed up or down. If you have a slight tummy problem that you'd like to hide, this dress does it very well! And you get to change the belt if you want! So I would definitely recommend this dress to anyone considering.