Not at all. My older sister and I saw each other naked often. Our parents were not 'nudists' but were Is it okay to be naked around my older sister and brother?.
I said we weren't allowed to be naked around each other. She replied that she had clothes on. I said a bra and panties are not enough.
But suddenly we were totally comfortable being naked in front of each other and had a really I've been messing around with my hot older sister for years, but.
We didn't just go around naked in front of each other on purpose, but it wasn't My brother, sister, and I found it necessary to almost completely.
Yes, I am comfortable being naked around my brother, and he is comfortable being naked around me. Really, it's not a big deal being naked around each other.