I am basing my review on the edt sample of Diorissimo I got from The Perfumed Court. I have never smelled the vintage.
That said, for the whole ten minutes Diorissimo registered on my skin it was a fine, green muguet. The very essence of fresh springtime. Then on the eleventh minute it faded to nothing. Literally nothing left on my skin. How sad!
I will at some point sample the vintage and maybe the edp and be happier than I am with this sample.