Her skirt rode up higher and I got a good peek at her golden tanned ass. I noticed the thin strap of her G-string disappear between the crack of her pretty round ass. Below that, a small patch of white appeared with the well defined outline of her large pussy lips showing through. Carla’s legs were long and well toned. I felt a twinge in my crotch as I watched my sister in law bending to reach her bag in the trunk of her car. Over the past year this seemed to be happening more and more. A glimpse here a quick flash there. At first I had thought she was just getting more relaxed around me and my wife, and letting her guard down but lately I was rethinking that because the quick flashes had become more frequent and more daring and when her sister was not around, showed much more flesh. Carla had just arrived for a week long get together and had only been in our driveway two minutes and had already given me a great look up her skirt. Carla’s smile is infectious and when she turned she was just beaming. She gave me a hug and said, “Hi James”. Carla is a very good looking brunette, her hair is long and straight, and like today, she mostly wears it in a pony tail. Carla is fairly tall, 5 feet 10 inches and her figure is full. Carla is not fat, her tummy is tight, her ass round and full. Her breast are large, not in proportion to the rest of her body, it runs in their family. My wife has very large breast also but not nearly as large as Carla’s. Carla’s eyes are bright baby blue and besides her large breast are her most noticeable assets. I took the bag from Carla and followed her to the house where my wife Cory met us at the door. The two sisters hugged tightly and I watched as there large breast mashed together. I knew what Cory’s breast looked like and I often wondered if Carla’s breast were similar to Cory’s. Cory had large breast with large puffy nipples that almost resembled cones when she was not aroused. Her areolas are fairly large and rose colored. Cory has short thick nipples with an indention on the tip of each nipple. I had seen glimpses of Carla’s breast but had never gotten a good look and had never seen her nipples. Later that night we all changed into bedtime clothes. Cory and I both wore sleeping pants and a t-shirt, Carla had on a t-shirt and shorts. We all decided to play Wii and the girls wanted to play tennis. From the very first game it was very easy to tell that neither girl was wearing a bra. Carla’s large breast were flying everywhere with each stroke of her hand. I watched as the material on her shirt must have stimulated her nipples, they grew and grew and soon were long and thick and sticking straight out into the thin material of her shirt. I was supposed to play the winner but I begged out and told them to play again. After almost two hours of play the girls were wore out and my cock was half hard from all the sights. I wanted to watch the news on TV and Cory said she was going to get ready for bed. I told her I would be in just as soon as the news was over. Carla said she was going to have to go take another shower so both girls left me in the living room and headed down the hall. When the news was over I headed down the hall and just as I approached the hallway bathroom, the door opened, and Carla stepped out holding a towel to her breast. She was heading to her bedroom and we almost ran into each other. I could see each side of her large breast and I was amazed at just how big her breasts really were. She smiled and said,” Sorry”. As she walked around me, I glanced down to see her beautiful round ass as she walked past me. I went to bed dreaming of my sister in law that night. I had to work the next day but we had decided when I got home we would start the weekend by grilling some steaks out in the back yard. It was late evening when I started the grill. The girls were sitting outside drinking wine and I had myself a beer as I prepared to put the steaks on the grill. We ate and then cleaned up and sat outside watching the sunset as we had a few more drinks. The conversation got more risqué the more the girls drank and before long the talk turned more about sex and specifically Carla’s lack of it. Cory was feeling no pain and told Carla, “Well if you need someone that bad just take James to bed tonight”. We all laughed about it but Carla’s looked at me and her sudden serious look took me by surprise. She said, “I might have to take you up on that offer Cory”. My wife didn’t even hesitate when she said lets go now! Cory jumped up from the table and started toward the back door and Carla was right on her heals. Cory looked back at me as she opened the back door and simply said, “Are you coming”. I could hear laughter from both girls down the hallway as I entered the house. The first thing I noticed was Cory’s shirt laying on the floor of the hall, next was Carla’s shirt, when I turned the corner into our bedroom both girls were sitting on the bed with nothing on but there panties and bra’s. I walked toward the bed but Cory stopped me and pointing at my pants said, “Take them off”. I wasn’t going to let this opportunity pass if indeed they were both willing to go through with it. I reached down and started to undo my belt looking straight into my sister in law’s eyes as I did. I dropped my pants knowing my cock was sticking straight out in my boxers. Cory reached behind her and undid her bra and tossed it to the floor. I watched my wife’s breasts and her nipples started large and puffy but as I watched her nipples pulled in tighter and tighter until they stuck straight out. My cock seemed to grow another inch as I watched. I pulled my shirt over my head and then watched as Carla undid the front clasp of her bra. Her breast were so large they were already spilling out of her cups and when she released her bra and her breast fell out in the open for the first time for me to see I was awe struck. Her areolas were huge the same rose color of her sisters but just on a much larger scale. Carla’s nipples were already hard and her nipples looked almost a ½ inch long. They were easily as big around as my thumb and had large bumps all the way around the edge of her areolas that looked like large goose bumps. Carla’s breast sagged a little but it was mainly due to their size. My wife laid back on the bed lifting her hips up as she pulled her panties off and tossed them to the floor. Cory has a fairly full bush of pubic hair but I could see the wetness matting down the hair directly in line with her slit. Carla was next and as she raised her hips to pull her panties off I could see her panties were sucked into the crease of her pussy making a perfect camel toe. I watched as she slowly pulled her panties down revealing her completely shaved pussy to me for the first time. Carla’s pussy lips were long, thick, and meaty. Her pussy lips were a nice light pink color that begged to be sucked. Cory’s pussy lips were tight with very little of her labia ever exposed. The two sisters had some definite differences. I slid my boxers off and watched Carla's eyes as they were staring straight at my 7 inch cock. I crawled in between my wife and sister in law and without hesitation my wife bent down and began sucking the head of my cock into her mouth, she knew how much I liked to have the underside of my shaft licked and played with especially directly under my cock head. As my wife began sucking my cock in earnest I leaned over and began licking my sister in laws pussy. Carla’s pussy smelled so fresh and as my tongue snaked its way inside I felt her wetness and her labia spread wide open like a flower before me. Carla is loud. My wife would whimper at times but Carla was flat out loud she talked to me encouraging more and more and when she was not talking she was moaning and groaning I played with her breast as I continued sucking and licking her pussy. Cory had stopped sucking my cock and was sitting up watching with an amused look on her face as I continued to play with her sister. Suddenly Carla was pulling me forward begging me to put my dick inside her. I slid forward briefly slowing down to lick and suck her nipples. Carla had other ideas and pushed me aside telling me she wanted on top. I watched as she positioned herself over my cock and guided me to her pussy lips. I felt my cock head pressing against her opening and felt her lips part as my cock head slid between her thick pussy lips. Carla’s large breast hung own and rubbed on my chest. As my cock slid inside her I watched as Carla reached back and grabbed her right breast, she started moving her nipple back and forth across my nipple. My cock bottomed out deep in her pussy and I felt her pussy spasm slightly. Her moans were growing louder and louder and she was rubbing her nipple faster and faster on my nipple. Carla was meeting my every thrust with her own, and soon I felt an orgasm beginning to boil up with in me. Carla felt me getting closer and leaned forward smothering my face with her massive breast and I began to cum. Carla grew louder and louder and suddenly I felt her pussy begin to spasm. It felt like a warm wet velvet glove milking my cock as I exploded more and more inside her. Carla’s whole body began to shudder as her own orgasm rocked over her. My sister in law and I both held still enjoying the moment. Carla sat up with my cock still buried inside her. She had finally gotten quiet and I watched as she looked over to her sister and gently reached out and began to fondle Cory’s breast. Cory reached over and started playing with Carla’s breast also. Soon Carla slid off of me and the sister’s lay facing each other caressing each other softly, primping each other’s hair, and gently rubbing each other’s breast. My cock was soon at full attention and as I watched Cory crawled up and pushed Carla over onto her back then she laid down on top of Carla. Their breasts were mashed together and their pubic mounds were pressed against each other. I could not stand it any longer and as I crawled behind them I had the most amazing sight. The sister’s pussies were perfectly inline with each other, my wife on top with her ass sticking up and Carla’s butt on the bed with her pussy tight against Cory’s. It was a contrast for sure. My wife’s hairy pussy pressing against her sisters cleanly shaved pussy with her large labia lips engorged and open to me. I got off the bed and asked both girls to stay as they were but scoot there pussies to the edge of the bed. I walked behind Cory and slid my cock into her wet pussy. As I pumped into Cory’s pussy my balls were slapping against her sisters pussy. Again, Carla got loud. The harder I pumped the harder Cory’s pubic mound was pushing down onto Carla’s and both girls were feeling the effects. I got an idea and pulled all the way out of my wife and slid into my sister in law a few strokes, then, I pulled back out and entered my wife’s wet pussy again. I went back and forth between the sisters until I felt I was about to cum. I buried my cock as deep as I could in my wife’s pussy and began to empty my balls again. Cory came at almost the same time as I did. It was great and as I pulled my shrinking cock from her pussy I watched as some of my cum ran out and fell right onto her sisters pussy. We all showered then all slept together the rest of the night. As a matter of fact we all slept together for the rest of the week. It was an amazing week that only grew wilder as the week went on. Any and all votes are appreciated.