This is mostly factual. Some of the incidents are combined for time. There are some climatic parts that are purely fantasy and wishful thinking on my part.
I am on my second marriage and my wife has 3 sisters. My wife, Carol, is 5'3" and about 150. She has a nice ass that is slightly big. 36C on top and she likes to wear low cut tops. My wife is the oldest and my sister-in-law, Jeanne, is next. She is 5'5" and about 135. 36B is my guess from what we have talked about. Nice tan most of the year. Her legs appear longer than they are. She goes to the gym regularly and is fairly fit and solid. She dresses fairly plain and does not go the low cut route my wife does.
When she drinks she loosens up and can be pretty funny. She lives an hour away and often sleeps over. When I first got to know her, we were watching TV and chatting. My wife came into the living room in her bra and thong panties. Jeanne started commenting on the thongs and how they would bother her being up her ass all day. My wife said she was used to it and it didn't bother her anymore. Jeanne said she didn't wear panties and I said no way, etc. She stood up and pulled down her jeans so I could see she wasn't lying. And she was shaved. My wife shaves her pussy, but leaves a little on top.
We could see my wife's nipples were hard through her low cut bra. Jeanne commented and Carol pulled her bra down and showed her nipple and the little bumps around the outside of the nipple. Jeanne said she didn't get those bumps and pulled her top and bra down and showed her now erect, smaller nipple. Of course I was enjoying all this very much!
Jeanne then asks if Carol told me the story about the car wash. I said no and my wife, a little embarrassed at first tells me what happened. She had on her short summer dress and was sitting in the car. She got out to get something in the back seat. Her dress rode way up. As she leaned into the backseat, the dress rode way up in the back. When she got back into the front, she noticed the guys smiling and looking at each other. About a minute later, they asked her to get out of the car for a second. She figured they were hoping to get another peek. So she swung her legs open and let the dress ride up as she got out. They looked at the floor mat or something, so she leaned back into the backseat again, hoping they got a good view again.