I only saw them once, and I was too young to remember much, but when I was around 3 years old I walked in on my Mother stepping out of the shower and saw her breasts as she dried off. I asked her what the were and she responded with "These are my boobies" as she began to dry them off. I remember her nipples being rather large, but aside from that I can't come up with a clear mental picture. As I grew up and saw more women, I found that hers weren't very big (B-cup or so) and grew much more interested in bustier women. 

As for you, dear reader, what have your experiences been with seeing private parts of your famil members, at any age? I'd love to hear from you in the comments or a private message! Thanks for checking out my blog here too! :D