It's short, yet still tasteful, and the A-line hem with just a little bit of frill makes it look light. Putting a lace trim in the collar keeps the look cohesive throughout. This is also exactly the type of dress where buttons in the front going from neckline to hem is an excellent choice aesthetically. Any longer dresses would have a harder time pulling it off - Victorian and Neo-Victorian are among the few styles which generally do it beautifully.
The dress is also available in black and white, which is, in my opinion, an equally beautiful piece. Available here.