Upon her friends leaving, my step sister mentioned she was going to shower and go to bed. I am Indian guy 20, my sister accidentally saw me fully naked.
But then I heard her call out, telling me to come in. I've never seen my sister naked. I asked if she was dressed and she said yes. The door was.
Secondly we have common underwears drawer and we wear the same panties ( My little pony or hello kitty fullback cotton panties) So yes I see her naked.
Nude family adventures. I grew up in the middle of a single parent household with just my mom and my two sisters. Us siblings are about 2.
My older sister explained she's acting that way because she's embarrassed that I seen her naked. So, little sis avoided me till she and the other went to the bus.