She was standing at the sink doing the few dishes that were left over from last night. I walked into the house by the back door into the kitchen. Heidi was wearing a T-shirt that was cut off just below her 34C breasts and a white pair of boy-pants panties. God was she sexy. My sister was about 5'2" 110 lbs with what I thought was a perfect shaped bubble butt. I would slap her on it every chance I got. I thought that at 19...