There is no telling how well you will produce, or how 'easy' breast feeding will be for any woman. Breast/nipple size can't tell you anything. Try not stress about it though because that definately won't help.
Every woman is different and produce milk differently breast size doesn't change that.
So can women with 36B breast feed ?
I'm 19 weeks pregnant and I already have milk coming out. It's been happening since i was 17 weeks. My doctor told me that it means I will make a lot of milk. I'm a 38D.
I wear a 40 G and with my last child I made so much milk I couldn't take it anymore and actually gave up nursing before I really wanted to. So no, not true for me.