Breast augmentation or nipple procedure?

I like the look of my breasts and nipples when my nipples are erect, but when they are not they do not protrude from my areola at all and appear flat. However I've ready that they're not truly "flat" since they protrude when cold or stimulated. Is this normal because I feel like I never see that on other women. I have small breasts anyway so I wonder if this could be helped with an augmentation? Otherwise I'm curious about less invasive options.