Summer vacations

Summer was close to begin with, and it was the perfect opportunity for the sisters to have fun together, try out the swimsuits they bought when Carrie went to her family and, if you were lucky, have sex. Also, your girlfriend had finally convinced Cassidy to pay a visit to the local college and see if she could continue her studies here. At start she was supposed to visit you for a week somewhere in August, but her elder sister worked her so hard that she ended up agreeing for three whole weeks as soon as vacations started. You both hoped she would stay longer.

Now Carrie was fully comitted to this. You couldn't have sex without her asking you what you'd like to do to her little sister or what you'd want them to do to each other. What had started as a game had become a full time obsession, and it excited you even more than you would have thought.

Finally, the big day arrived. As soon as the doorbell rang, Carrie jump to her feet and ran toward the entrance. She didn't let time to Cassidy to say hello, immediately grabbing her head and burrying it in her chest for a mellow hug. "Cass! I'm so happy you're finally here! Come in, come in!"

Cassidy seemed happy to see you, even though you only met her once it looked like Carrie's effort in the past few weeks to peak her interest. However, she was way more elated to be reunited with her older sister and couldn't spend an entire minute two feet away from her. You couldn't spend the whole day with them, anyway, since you still had to go to work, but you weren't even sure the young woman noticed when you left, too busy looking at her elder sibling with adoration.

The first day, they went out to town, drank coffee and chatted. Carrie led Cassandra into pointing all the women in the vicinity she found sexy and describing exactly what she liked in them.

The second day, Carrie had convinced her sister to let her shave her pussy clean and take a picture of the result, pretending she would keep it for herself. She sent it to you while the younger girl was looking away.

The third day, they went to the local swimming pool. Cassidy, who never had gone outside with anything shorter than a shirt and a skirt, agreed to wear nothing on the way there above her swimsuit than sandals and denim shorts so thin that the string of her bikini bottom was mostly uncovered -which matched her sister's outfit. Not only did Carrie once again had her talk about the surrounding girls, she listened to her describing in great lenghth what she would like to do with one of the female lifeguards and took mental notes with great care.

The fourth day, you went home to find both girls wearing nothing but their underwears. Cassidy was shyer than usual around you, but you eased her up along the evening. Later that night, Carrie informed you that they agreed on not wearing anything more convering when they were at your place. You asked if it meant lingerie was also banned, which peaked her interest and you ended up admitting you liked this kind of stuff. All this discussion happened while you had loud sex, like every night before that.

The fifth day, the girls were now taking their showers together. Carrie then brought her little sister to a visit to the local college, which she seemed to like. She also couldn't stop joking about how she may have all sorts of sexual adventures with teatchers and students alike here.

The sixth day was the first time they had sex.