I was 15 when my 17 year old brother exposed me naked in front of his friends. Living in the same house he had seen me nude as many times that I had seen him. Of course we were both little kids and things like this were bound to happed but began to feel embarrassed about it when I turned 15. Pubic hair began to grow on my pussy, my breasts were almost fully developed, hips got curvier and my brother began playing jokes to see me naked. He once picked the bathroom lock when my parent were out of the house, came in and grabbed my tits while I was showering. He just stood there laughing, telling me what a sexy sister he had while looking down between my legs. Couldn't do anything else but rinse the soap off, step out and walked back to my bedroom rapped in a towel. I exposed every inch of myself in front of him and felt so humiliated, I never had the courage to mention it to my parents. Not telling was a mistake, because he knew I was embarrassed and could do it any time he wanted. I was totally unaware about him talking about it with his friends and one day he carried me out in my underwear to expose me in front of them. I remember him picking me off the floor by my wait, carrying me outside in my underwear and stripping me in front of his friends. Obviously my parent were out and got my tits and pussy paraded in front of them and the freedom of no one around to stop them. I remember them squeezing my breasts and ducking down to look at my pussy, enjoying themselves doing it and so humiliated I didn't even scream. Just hung there looking at them getting sexually getting turned on by the naked female in front of them and taking full advantage of it. Never felt so naked and humiliated in my whole life and still never said a word about it. It was done and no used embarrassing myself having everyone knowing about it, so I kept it a secret and swallowed the shame and considered myself lucky my neighbors didn't see it.