Thanks for your reply
I have used mock french seams on curves and they do fine. I just wonder if it would work with notched seam allowances, though, because you need enough fabric to fold into the seam. They tend to be a bit bulky.
Yes, I am afraid of the bulk... Since they are princess seams, they run right on my bust so it might look weird.
You might want to do a couple test pieces to see which finish you prefer.
I will do that but I wanted to have some advice first to avoid testing things that cannot work