I stopped short as I passed the room. Tossing my mobile phone in one hand and cocking my head to the side to run the image over my mind. I slowly took two steps backward and stood by the open door.
It was my kid sister’s room, Diana, the light from the hallway was spilling into the gloom and splashing across her bed. I could see one of her legs in the yellow glow, a long, shapely leg interesting enough to have caught my eye. I looked down and smiled wryly. That wasn't all it had caught. I tossed my phone one more time, my mind rushing way ahead of my actions and then I silently slipped into the room. Everyone was out and we were the only two in the house. Diana was 18 but she was in bed early as she had some kind of school exam tomorrow. I am older than her, 24 and I was home visiting from the City where I work as a Banker. My younger sister had caught my eye in the last couple of years, the tight clothes she seemed to wear when I was around here, and the last time she had come to visit me she had slept in one of my T-Shirts, with no underwear. Over the last couple of days since I had been there she had really seemed to change. The older man in me watched the progression from young coltish girl to sexually active woman with interest and I wondered what to make of the snippets of conversation I had heard around the house.
The room was lit by a bed side lamp. The furnishing was late high school with some teddy bears from her childhood and some boy band posters still hanging up. Our narrowing age gap and the recent developments were accentuated by the expensive make-up on her dresser and the wonder bra on the floor. She was sleeping on top of the covers, which struck me as strange, as the room was not overly warm. I raised my eyebrows and nearly laughed out loud when I realized she was wearing one of my T-Shirts again, an old one which had been washed many times and was way too small for me. My eye traveled over the Nike insignia and remained fixed on the tight curve of her full breast under the material. As I watched she moaned and turned on the bed, I stiffened momentarily and then my eyebrows shot up again as her body fell into the pool of light from the lamp. She brushed her hand over her breast, and then slowly pulled it back, leaving an erect nipple poking through the Swoosh in its wake.
Her other leg had followed her half turn and as a result her legs had fallen open, spread wide as if she was in Labor. The tight t-shirt willingly gave up the battle and rode up to her waist. I swallowed hard as I saw her tight white thong. Again she moaned and this time my body relaxed as I saw her hand reach for her breast to squeeze it briefly as she half arched her back into the caress.
I moved around the bed, noticing the fact that her hand had settled on her breast, the tightness and smoothness of her body, and the growing bulge in my pants. My eyes traveled over her hand, her tight breasts, her chest was rising and falling quickly, her breathing short and shallow. My gaze slipped down her body as I moved along the length of the bed, following the rumpled contours of the t-shirt across her smooth stomach, her belly button just visible under the hiked up material, her smooth, tanned abdomen which disappeared under the tight white panties. My gait slowed but did not stop as I crossed the foot of the bed and slowly moved up the other side. My breath caught in my throat as her legs widened slightly when I passed between them. I could see the tight material stretched hard against her pussy lips, the fine hair clipped and controlled. As I squinted slightly to focus my view more I saw a slight damp patch on her panties. As I passed the foot of the bed she rolled over onto her side, her legs held tight together, rolled into the fetal position. Her panties were pulled tight against her ‘pink parts’ and from beneath her I had a clear view of her cunt and arse. I wondered why the material was so tight and as I moved up the side of the bed she rolled onto her back again and I saw why. Her other hand had slipped down to her panties and was pulling against them. As I watched I saw the fingers work slightly and knew the slut was rubbing her clit with the material. I moved up and stopped by the head of the bed, her head was turned towards me, her gorgeous face calm in the light, her lips pouting slightly and her breath coming in ever faster gasps.
I stood there for a while and smiled inwardly as her movements intensified. I could see now that she was pinching her nipple underneath my shirt and her fingers had slipped underneath her panties. As I watched she started to flick and squeeze at her clit and a wide smile spread across my face. Her breath was by now coming in short hard gasps and I almost had time to wonder at myself before my cock was in my hand.
