How old is too old for your kids to see you naked?

Holding a B.A. in Social Sciences, I admit that I am perplexed at the number of websites that exist asking this very same question" "At what age should my children not see me naked?"
Someone posted a reply here about his wife not being satisfied with her body to the point that she is considering breast surgery and that she doesn't let even her husband see her nude. The question, along with some of the answers, reveals quite a bit to me, which I feel the need to share here to help put people at ease.
First of all, forget about asking your pediatrician. Their answers are directed by what is called, "Cultural Normative Behavior", and it varies incredibly from culture to culture, and even from region to region within a country. However, cultural normative behavior is exactly what drives American culture. The poor lady who cannot accept the appearance of her breasts is a victim of this. In our culture, perfect breasts are plastered all over the internet, the cinema screen, and as much of the "perfect breast" is revealed on television as the FCC will allow. But for a woman to have saggy breasts, or one breast larger than the other? The media and the fashion industry have convinced us that we must be physically perfect in every way to be viewed publicly. How tragic; it's unrealistic and it's unhealthy. And by raising our children with the same ideas of nudity that we were raised with is only perpetuating the whole thing. And I must confess that there are many people who are bothered by this on a deeper level than they realize, or websites asking the same questions wouldn't exist.
Let's look at this way: in the countries where nudity is permitted on public beaches and so forth, these countries do not have nearly the sexual crime rate that the United States does, nor do they have the teenage pregnancy rate. Casual nudity in Europe has erased the mysticism of the body that remains so prevalent in the U.S. in the U.S. nudity is associated with sex, simply because parents teach that to their children on a subliminal level. At the same time, if so many parents did not want to relax nude around the house while they have children at home, these types of web sites wouldn't exist. In short, Europe has long since removed any existing sexuality from simple nudity.
So, here is the situation: You were raised in a family that taught that nudity is wrong. Yet through some chance happening, you realized that being nude around the house can be comfortable, relaxing, liberating, and casually recreational; some have even watched TV nude. But once the kids came along, you reverted back to how you were raised, and now you are questioning if it was right or wrong. You have found that being nude around the house is not sexual, yet the cultural normative of teaching your children different than what you have learned from your own experience, prompts you perpetuate the norm you now question. You miss being nude and want that option back. I say this because the ones posting the questions and answers have children and they want to continue nudism to the exact point that someone else tells them to. That is pretty much the summation I have arrived at. Let me know if it is accurate or not, because if that is the situation, here is how to resolve it:
Being nude in front of your children is wrong only the even that you make it that way. My guess is that if you equate nudity with sex, and at the same time want to have the right to be nude at home, you received mixed messages while growing up, and you are passing them on to your children. Cut that out. It isn't healthy for anybody involved. Nudity is only a perverted act if it is treated like one. I remember asking my first wife when she delivered our son if she planned to breast feed. She replied, "NO! That's not natural!" Wow.
If it is relaxing and comfortable for you to enjoy being nude around the house, there is nothing wrong with that. There is more modesty in a nude woman than a woman in a string bikini. The woman in the bikini wants something "left to the imagination" while displaying the conservation of her body. That is more easily interpreted as sex than nudity, because nudity reveals the flaws and the natural condition placed on the body through just plain living in it.
Here is a suggestion to introduce older children to nudism if you want to. Introduce them to the fine quality internet sites (you have to screen them first) regarding nude recreation. Discuss with them the advantages and freedom of nudism that you yourself have found with such things as nude housework, or watching TV nude, or what have you. If these activities are not sexual clothed, why should they be nude? Perhaps your children do things nude when you are not aware of it, but would feel embarrassed if they were caught by you; not so much that you would have seen them nude, but that they were caught doing something nude. The same thing would occur with you.
Do I have any children? Yes, my wife and I together have six children ranging from one year to fifteen; three girls and three boys. Have they seen us nude? Countless times. Were we doing anything that could be interpreted as sexual? Of course not.
Our culture condemns simple nudity in the home, yet glorifies it at the movies, and on television. And in every scene, the nudity is the result of a sexually inspired moment. The only time we take our clothes off is to shower or have sex. No wonder we are messed up psychologically when it comes to our bodies. Our children will grow up with the same hangups we have and wonder, just like we do, "what is wrong with this picture".

I have a 6 year old little boy and up until he was aroun 2 I would let him bath with me and so forth. BUt after that age I thought that he was getting big enough to understand that we were not the same and didn't have the same body parts. I also have a 3 year old little girl and I still let her shower with me sometimes. Because she knows that we do have the same body parts. Her 4th birthday is coming up soon and i plan on setting some privacy rules then. but although she is only 3 she knows that she is different than her dad and brother and she won't go in the bathroom when they are in there and she won't let them come in when she is using the bathroom. I don't want her to a ashamed of her body, but at the same time, I don't think it is appropriate for a father to be naked around a little girl either, even if it is inicent, because some people may get the wrong idea if it got out to the wrong people. I know that everyone is different and has different rules for their children, these are just what my rules are with mine. I hope that I haven't offended anyone. I just wanted to get my opinion out there..

My family is very open about nudity.

I think body shame is a very American thing.

I have three daughter, 10, 13 and 14, and they're always naked around the house. So are me and my wife. It's really no big deal.

I wondered about this from the start, but in the end the answer was easy. Obviously a newborn is oblivious, but where's the dividing line? I just naturally go off by myself to dress and undress, because it's the privacy I'm used to. Around age three, he started copying my modesty.

I suspect it's the same for all parents and children, if you watch what you do and how they copy you. When they start imitating whatever your modesty calls for, just go with the flow and keep doing modest things. They will follow suit.

My $.02: My parents let my sister and me see them naked when we were tots, and I think it allowed my curiosity to be answered about both men and women's bodies. My wife and I are hoping if we welcome nakedness as a fine thing-- while closing the bathroom door for privacy sometimes-- our son will learn that bodies are good and beautiful things. I echo Ken and Paul that attitude is key.