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.
"What is it you want, Mary? What do you want? You want the moon? Just say the word and I'll throw a lasso around it and pull it down. I'll give you the moon, Mary." It's a wonderful life, 1946 (Frank Capra)