A friend of mine saw a similar image on Facebook and asked how to do it. This was done in less than a minute… you can refine of course!
You can add a white vignette in many ways. NIK Color Efex Pro has a Vignette Filter… just set the color to white and make adjustments with the sliders if needed.
Or you can add a layer in Photoshop and make a feathered selection with oval (or other shape) and fill with white, reduce opacity as desired.