Round diamond, she did not even know there are diamonds in princess cut until i told her.In the sample Pictures in your original post, your girlfriend sent you a picture indicating that she wants a princess cut diamond with halo and pave. Your picture (or what you want) was a round diamond with graduated side stones down the shank.
Everyone is helping you find rounds. Does your girlfriend want a princess cut? Or a round in a setting like the picture? Cuz if she wants a princess cut and you get her a round ... especially if you get her a round because YOU wanted it ... after she specifically indicated princess, well, it would be unfortunate.
Does she want a round or a princess?