Continue to watch?

I was curious at her display, like I said it almost seemed like she was putting it out there for me. I decided to watch and see what happened.

I continued to watch as she started slowly shifting her weight from leg to leg, as she moved her ass to the music on her headphones. I was riveted by the way her ass moved, as she shifted back and forth her shorts moved across her pussy back and forth. Each time she moved away I could see the crotch of her shorts catch her pussy lips and pull them to the side, and for a brief second, they would spread open her pussy before they would slip past and her lips would meet again. It was entrancing, I found myself staring anticipating every shift just to see that split second. I didn't even realize that my hand had subconsciously moved to my hard cock and I was slowly stroking it through my pants.

I started to notice that her pussy was slowly starting to glisten, as I assume the motion was slowly turning her on. Then as I watched she stopped swaying and she lifted her leg up put her foot up on the counter and stretched her leg out, to her side. I watched this display of flexibility, only wishing it had been the leg closer to me, but from this angle I could see the shorts cutting deep into her slit. She slowly started rolling her hips to the music and I could see the shorts crotch line moving there way up and down her pussy slit. I couldn't quiet tell it was just falling that way or she had intended it to land right there. Then she took that leg down and arched her back again this time her pussy wasn't as visible but from what I could see she was getting more and more wet, as it glistened more. Then she lifted the other leg and put it up on the counter just as she had before, but this time I could see much more of her pussy. Just as before she started rolling her hips to her music slowly and this time I could watch as the silky fabric slid between the folds of her pussy and pulled her lips up and down as she moved.

I watched her intently as, from what I could tell, she was playing with her pussy. Then she brought her shoulders up, propped herself on her elbows, but kept her belly flat on the counter. There was no doubt that she was turning herself on at this point as her nipples were hard and poking out through the thin fabric of her tank top, as it was pulled tight across her chest. Then she slowly moved one of her hands up her neck and then down to her breast, she cupped it in her hand and then pinched her hard nipple. I heard a faint moan come from her lips as she did, then watched as the same hand slowly ran its way down the side of her body. She moved it down over her ass then down her outstretched leg. Her hand slowly made it's way back up her smooth toned leg and when it reached her ass she grabbed it. As she squeezed her ass cheek, I watched as it spread her pussy and I could see that she was getting wet. She let go of her ass and her hand crept it's way over her hip and back under.

I watched enthralled as her hand slipped under the front of her shorts, moved it way down and I could now see her delicate fingers as the moved the fabric out of her pussy and to the side, giving me full view of her now moist pussy for just a moment. Then, with just her middle finger, she slowly traced the line of her pussy from the back to the clit. Her finger remained on her slit and from what I could see was pressing on her clit to the beat of her music. I heard another soft moan and her finger started moving back and forth across her clit, again to the beat of her music. I watched and realized exactly to the beat, on the 16 Another moan, this time slightly louder and longer, then her finger slid back up her slit and the tip stopped right at her opening. I watched as she teased her pussy by slipping just barely the tip of her finger in 16 times. I found myself stroking my cock in time to her music, which I hadn't realized I had pulled out of my pants at some point. I waited to see what the next sixteen count brought. She did not disappoint as she moaned again longer and slid her finger into her pussy, I watched as it slid in and out to the beat, deeper each time, I wondered what would come on the 16 this time. I waited and watched as she sank her finger deep into her pussy and pulled it out glistening with her juices on the sixteenth beat. Then I watched her finger move up to her tight little asshole, and watched as she teased it with just the tip of her finger to the beat. I could feel my cock throbbing as I stroked the tip in the same time as she teased her tight asshole. I stared waiting to see if she would, counting the beats in my head, 13, 14, 15, 16, and...

She slid her hand back down across her wet slit and out of her shorts. She brought her leg down, put her phone down, and stood straight up. Her shorts now caught in the crack of her ass showing the tight little curves of her ass. She reached her arms behind her back and interlocked her hands, arched her back and stretched. I could see the loose thin fabric clinging to and hanging for her hard nipples. She then grabbed the waistband of her shorts and adjusted them, I assumed to straighten them out as they fell out of the crack of her ass. She then grabbed her bowl and walked over to the dishwasher, opened it, then bent over to put her bowl and spoon in. I was wrong about the adjusting the shorts to my pleasure she had in fact turned them even further, and from this angle I had a perfect full view of her smooth, now wet, pussy framed on one side by the shorts. Still bent over, she closed the dishwasher spread her legs about a foot and a half apart and grabbed her ankles and pulled herself down. I couldn't help but stare as she did even if, very soon would be looking my way between her legs. I watched as she bent further down, her pussy now parted slightly, I felt myself squeezing my throbbing cock. As her head came down between her legs I watched as her loose fitting tank top as fell down, thankfully covering her face but also giving me a nice clear view of her small but perfect bare breasts.

I crouched there looking at my sexy step-sister, bent over, breasts bare, long smooth toned legs, ass up in the air, and her now dripping wet pussy. I couldn't move, that moment seemed to last forever even though it was likely only a few seconds it seemed like an hour. I could feel my heart beat throbbing in my cock. Then I watched as she stood back up, turned and headed back towards the island. I knew from where I was she would likely be able to be able to see me out of the corner of her eye but I froze, my throbbing cock in my hand, hoping she'd pass by without seeing me there. She reached the island and grabbed her phone, she stared down at it as she turned towards me.