You are checking out a great dress from Molly Bracken.  This dress is lightweight and great for the summer.  The dress is longer on a normal 5'4" The dress is one layer of material and has somewhat of the feel of a performance type stretch material.  This dress fits great in the waist and flows away from the hips. 
 
Laid Flat Measurements:
18" across the chest
16" across the waist
37.5" from top of the neckline to the bottom hemline
22.5 from the waist to the bottom hemline.