Resolved Question

My nephew and twin nieces seem very comfortable walking about their house nude, even when we visit. My brother says its a phase and theres nothing bad going on so ignore them. I think they are trying to send some kind of message to the parents. Boy is 12, girls are 13. They are beginning to develop as adults. They have been doing this for years. Maybe it doesnt bother my brother, but it bothers me and makes me feel uncomfortable visiting.

The main words here are "their house".

As much as you think it may be inappropriate, if it doesn't bother them, and the parents are ok with it, then there's not much you can do about it except not visit. Or make plans to only visit when the kids aren't there. Or meet at a restaurant and stay in a hotel.

But on the other hand, since you are a guest in their home, they should try to be a little more accommodating. I mean, if you or them were expecting guests, I'm sure you would try to have refreshments that would appeal to your guests. you want your visitors to be comfortable. So if this makes you uncomfortable, talk it over with your host and let them know how it makes you feel. Then act accordingly from their response.

My ex used to walk around naked in front of her kids but only on the second floor. Anything in the living area on the first floor, she was covered.

But her daughter, who was the same age as your nieces, was very self conscience and wouldn't be caught dead naked. And would even die if anyone saw her in her underwear.