Yes, it is a wonderful and very romantic idea. "Men ~ take note. Very romantic idea. If you don't know if she has the dress you want her to wear, buy her one and make sure it's a stretchy fabric so that you have a better chance at getting her right size.
"Fast" (as in fasting, not fast quick :D) Cure for Depression by Dr Bilal Philips of Islamic Online University. ~ In sha Allah it works when one wants it to, and do it (successfully) with Allah's Grace & Mercy & Help.