Here is the original dress, retailing for $89.99 at Modcloth.
Here is the nearly identical?! fabric at Fabric.com.
Combine the following 2 patterns and you would be set!
The dress requires 2 5/8 yards total, but of course you would need less of the print if you were going to re-create the colourblocking/contrast panels. All up, I would say the dress could be made for less than $50, or less depending on how frugal you are.
Admittedly, these cotton conversation prints are reasonably easy to find, along with basic dress silhouettes. I shall definitely be re-thinking my dress purchases in the future, and seriously asking myself – can I make this same or a similar dress at home for less?