Modest formal gowns are hard to come by. The trend of doing the “sheer lace over a solid cap sleeve" needs to come to an end. I propose, as a solution, using nude lining like Reem Acra did in the 2013 resort collection. The neckline of this gown may be a little low for some, but the idea is still there. If you don’t feel like "baring" it all with a nude lining. Try something to contrast and make the lace really pop. No need to highlight the part that needs to be covered by making is so obviously solidly shielded from eyes. Nude lining for the fashion win.