Step-Sister in Swimsuit 4

I snapped out of my trance and my hands just lunged at her breasts like a monster. I might have overdid it because Caitlyn leaned back a bit in surprise. For the next few minutes, I massaged Caitlyn's breasts, her shoulders and underarms (all completely hairless and smooth). As I was doing so I kept looking at her bikini bottom. The small patch had grown into a large patch with so much of Caitlyn's juices expelled out of her pussy. There was so much that her bikini bottom couldn't contain it and a few drops started dropping onto the floor! I decided that I shouldn't leave Caitlyn hanging like this and that I should finish the job. I pulled her wet pink bikini bottoms down to her ankles and started to rub my whole hand over her entire hairless pussy. It was soaking wet! After a minute of swiping, I went underneath her folds to find her clit, fingering it slowly at first but then faster and faster. For good measure, I also stuck another finger inside her vagina, twirling it around fast to feel the completely wet inside. Caitlyn couldn't hold it anymore. She let out a long, soft moan and her body stiffened in its standing position. For 30 seconds her body tensed and relaxed multiple times as orgasm after orgasm shot through her. When it finally subsided, Caitlyn looked exhausted and her sticky, naked body collapsed on top of me. We both fell to the floor, panting. 'Hope you had fun!' I said. After getting her breath back she replied 'sure did bro', then proceeded to get off me and pointed at the bulge in my pants. 'I think it's your turn to have fun!' I got excited for what Caitlyn had planned for me, and my already erect penis felt ready to burst. Caitlyn went to the bathroom cabinet and grabbed two things: a new razer and some shaving cream. I was a bit confused at first but she explained: 'I think you're getting too hairy. I loved your smooth legs and chest when you were younger,' she said while twirling her blonde hair and flashing her cute smile. I was a bit disappointed that we would not be getting straight into a mutual masturbation session, but agreed to be shaved. Caitlyn asked me to strip naked, so I immediately took off my pajamas and threw them on the floor. Now I was standing there completely naked in front of my step-sister, my erection pointing straight up at the ceiling. 'Hmm, looks like we need to contain that!' she said. Caitlyn took off her nightgown and threw it on the bathroom floor, then she took off her pink bikini top and bottoms and handed them to me. I got extremely excited as I had never worn a girl's swimsuit before. I put the bikini top on first. They were actually a bit loose on me (Caitlyn had B-cup boobs, I was flat chested hehe), so Caitlyn helped me tie up the back. Then, I pulled her bottoms up to my waist. The sticky wet spot on the bikini bottoms squished into my balls, and I was now really, REALLY horny and a bit embarrassed as I was wearing my step-sister's bikini. Caitlyn was standing in front of me, completely naked from head to toe. She had shaved herself recently, so there was absolutely no sign of hair on her arms, underarms, legs or pussy. It was a gorgeous sight. I wondered how many other siblings or step-siblings out there were being this intimate. Caitlyn took the shaving cream and lathered it all over my body. She made a joke: 'Wow, I didn't know I turned you on that much!'. I was oblivious to the joke, so Caitlyn rolled her eyes and explained: 'the shaving cream looks like cum, dummy!'. 'Oh!' I said, finally getting the joke. Caitlyn shook her head at me playfully and started to shave my body. She did my arms and chest first, then my underarms and back, then my legs. She asked if I wanted my pubic hair shaved completely and I told her I just wanted it trimmed, so she got some scissors and cut off a bit of hair, a little bit at a time. When she was doing this, Caitlyn had to pull the bikini bottoms down slightly. The constant touching of my step-sister's hands and my crotch was making it very hard to hold back my cum. When Caitlyn had finished shaving my body, she stood back and admired her work. I looked in the mirror and was shocked at how my almost hairless body made me look a year or two younger. I was two years older than Caitlyn, but now we looked around the same age. Without warning, Caitlyn playfully pushed me onto the bathroom floor and sat on top of me. I was surprised at her strength, especially with her kind and sweet nature. She glanced down at my boner, which was straining to get out of the pink bikini bottoms. Next thing I knew, her pussy was touching my boner through the swimsuit and she started humping! I was in absolute heaven! Being shaved by Caitlyn had turned me on so much and now this! Caitlyn was grinding into me forcefully enough that with every move forward and back, my penis would be exposed slightly, then hidden again, exposed then hidden. I lasted probably 30 seconds. I was staring into Caitlyn's blue eyes when four or five ropes of cum shot out of my penis and onto my chest and Caitlyn's pink bikini top. I was in a trance for the next minute. I couldn't move very much, but eventually Caitlyn helped me up and we returned to her bed. She left me on her bed while she took her damp bikini to the laundry downstairs. She had put on her nightgown but had nothing underneath. It was a windy day, so I imagined in my mind her nightgown flowing up when she passed a window downstairs. Caitlyn came back to the room and jumped onto her bed with me. 'I know you're tired, but back in the bathroom you were on the bottom and now I want to be the bottom!'. I suggested that Caitlyn get her old blue swim-meet swimsuit to wear. She had grown taller and her boobs had grown, so she couldn't get the shoulder straps on. I told her it was OK to keep the straps off. Her old swimsuit was quite worn. The color had faded and there were small rips in parts of the suit. I instructed Cait to lie on her bed face down. As I took off my pajamas for the second time that night, Caitlyn's butt was swirling in a circle in front of me, tempting me. When I was completely undressed I climbed on top of her back, with my boner right between her butt cheeks. My hands reached into the front of her swimsuit and massaged her boobs, moving in circles. I started humping her butt through her year-old swimsuit. Eventually we started humping in unison, both of us face down on her bed. The friction between my boner, her swimsuit and her butt, as well as the added sensation of touching her B-cup boobs sent me into overdrive and within a few minutes, a small stream of cum flowed onto the back of her swimsuit. I fell on top Caitlyn and we stayed like that for a while- no talking, just two step-siblings sharing a beautiful moment. We were both incredibly tired but somehow we managed to find the strength to get up and use some tissues to clean up the mess. When I inspected her swimsuit, I found that my humping had made a small rip even bigger! I could now see most of Caitlyn's smooth, hairless 14-year-old pussy. She took off the swimsuit and we both went under her blanket, completely naked. I was exhausted and did not feel like jerking off anymore, but I did finger Caitlyn's pussy, bringing her to a few orgasms in a row. After that, our session for the night was finally over. We embraced in a nice, heartfelt, naked hug under her blankets and drifted off to sleep.