My Sister's Black Satin Slip by satinshirt

I was twenty years old and living at home with my parents. My sister (Kelly) who is three years older, left home and got married (to Eddie) at just seventeen. Kelly had a gorgeous little girl called Amy. I often visited my sister on a Saturday afternoon to see my niece, sometimes I’d take her to the park. Occasionally I would babysit for Kelly so they could both go out for the night. I got on well with my brother-in-law; we shared an interest in weight training and motorbikes.I never got on well with my sister when she lived at home; we fought like cats and dogs. Though I was younger and smaller, being a boy, I was stronger and always beat her in a fight. I always believed the main reason my sister left home and got married so young was to get away from me. I accused her of being our parents favourite because she was older and a girl. She could do no wrong, especially in our father’s eyes. If something got broken or went missing, Kelly would blame me. Our parents would always believe her, regardless of whether I did it or not. I hated my sister so much I refused to attend her wedding, much to the anger of our parents.

I never understood why my bitch of a sister was so popular with boys when we were growing up. From the age of eleven or twelve, Kelly was never without a boyfriend or an admirer knocking at our door asking to see her. The boys were usually a couple of years older. Eddie was her first-ever boyfriend. Strangely she met up with him again after leaving school at just sixteen to go and work in a laundry. At seventeen, Kelly told our parents she was getting married to Eddie and leaving home. Our father flew into a rage stating she was too young and couldn’t marry until she was eighteen without their permission. Our mother managed to calm dad down, saying he risked losing her if he insisted she couldn’t. In another six month’s she would turn eighteen and wouldn’t need permission anyway.

I wouldn’t describe my sister as the prettiest of girls in the looks department, but maybe that’s because a boy isn’t supposed to fancy his sister. However, Kelly was a very early developer and always did have a very nice body, which I suspect is what made her so popular with boys. I remember when I was just nine or ten, I walked in on my sister taking a bath and got a good look at her large breasts. Kelly screamed at me to get out, and shortly after, dad fitted a lock to the bathroom door at our mother’s insistence. After that, I would force my way into Kelly’s bedroom at every opportunity to try and catch her naked or partly dressed. My sister always took pride in her appearance and nearly always wore pleated skirts and silky blouses or pretty dresses. She was the only girl in school that wore a white satin blouse as part of her uniform. This might sound strange, but I was always envious of the nice clothes she wore, especially her shiny satin blouses. I especially remember, Kelly was twelve (almost thirteen) and had just started senior school; mum bought Kelly her first satin waist-slip with pretty lace around the hem, to wear under her school skirt. My sister once caught me masturbating in the bathroom after taking her white satin school blouse and waist-slip out of the laundry basket to try on. I often wished I had been her little sister so I could have worn her cast-offs. Perhaps if we had been sister’s we would have been much closer when growing up.

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This particular and memorable Saturday afternoon, I visited my sister like I often did. I rang the doorbell and was surprised by the speed at which Kelly answered. Almost as if she had been standing there waiting for me. I was more surprised when the door opened and saw my sister dressed in a very slinky and clingy black satin full-slip. It had pretty scalloped lace trim around the bust and hem and delicate thin shoestring straps. I gasped with delight as I looked Kelly up and down and admired her lovely satin slip. I prayed that Kelly hadn’t noticed my reaction. I was somewhat relieved when she just turned away and picked up a paintbrush, then started painting the hallway.

“Oh!… That’s why you answered so quickly,” I said as I entered, watching her as she continued painting dressed in only her lovely black satin full-slip.

“Amy isn’t here,” she replied. “Eddie has taken her to visit his mum for a few hours. They haven’t been gone long, so won’t be back for some time yet.”

At that moment, I couldn’t believe how sexy my sister looked. Confused thoughts ran through my head as I watched Kelly intensely. I loved the way the slinky material of her satin-slip rippled when she moved and the way it shimmered as it caught the light shining in through the window. I was becoming aroused and having inappropriate thoughts about my sister. With each second that passed, I became more aroused and the more attractive she looked to me. Her long brown hair cascaded down her back; her ample breasts filled the cups of her silky-slip; her nipples pressed against the slinky fabric; the outline of her panties showing underneath as the clingy slip caressed every curve of her shapely body. I was aware my breathing grew heavier as I became more aroused. I tried to remain calm so as not to draw attention to myself.

“Why are you painting dressed like that?” I asked.

“I didn’t want to ruin my clothes,” replied Kelly.

“But you will ruin your lovely slip,” I told her. She glanced across at me and chuckled.

“What this old thing?… It’s just a slip. I’ve got plenty more,” she said.

Her words, “I’ve got plenty more,” echoed in my head. I was excited about babysitting for Kelly again. The first chance I got, I knew I would be sneaking into my sister’s bedroom to look through her clothes, to admire those lovely slips.

“It’s not just a slip, it’s satin and it’s lovely,” I told my sister.

She laughed. “Are you feeling okay?… So you like my slip do you?… As I said, it’s old and I’ve got others, some much nicer than this one,” said Kelly, amused by my behaviour.

“It may be old, but it’s much too nice to ruin by getting paint on it,” I insisted. “And you look gorgeous in it too.” Kelly looked at me in disbelief at what she was hearing.

“Have you been taking drugs or something?… Since when did you ever say anything nice to me?” she asked.

“That’s because I’ve never seen you in just your slip before,” I replied. Kelly paused from her painting momentarily to think.

She looked down at her satin-slip, then asked, “So what is your fascination with satin?… I never understood why you liked it so much. It’s just a piece of material.”

“Just a piece of material?… It’s so much more than that. It’s so elegant and sensual, the way it ripples as you move and the way it shimmers in the light. There is nothing so attractive as a woman wearing satin. It can even transform a plain-Jane, that nobody would normally look twice at into a stunningly sexy woman that people can’t take their eyes off,” I said. Kelly listened to me with extreme interest and disbelief at my comments.

She laughed. “Wow!… listen to you, Mr philosopher. There’s more to you than meets the eye,” said Kelly sarcastically.

“Okay then! You said you got lots more, so tell me why you wear satin-slips?” I asked.

“Because they stop static electricity building up and stop my dress or skirt clinging to my legs, and they can also stop some clothes making you itch,” she replied very unconvincingly.

“If that’s the case, why do they have to be so sexy, with all that pretty lace trim?… And what about camisoles and teddies and French knickers?… Why do they all have to be so pretty when they are underneath a woman’s outer clothes? No one gets to see them anyway. And why are they made from silk and satin and lace?… And why is it only women that get to wear nice silky underwear when a man’s underwear is so dull, boring and practical?…”

“I don’t know. I hadn’t thought about it. I can’t answer that!” replied my sister. ”

So what about your knickers?… Are they satin too?” I asked my sister.

“Yes, my knickers are satin. All my underwear is silk or satin. I can’t believe we are having this conversation. Why am I standing here with my brother talking about lingerie and my choice of underwear?” said Kelly.

“I’m just interested in why you wear satin underwear when you don’t wear satin blouses anymore? I’ve not seen you wear a satin blouse since you left school,” I asked.

“I suppose most women wear satin lingerie because it feels nice next to their skin and makes them feel sexy and feminine,” said Kelly rather meekly and embarrassed. “And for your information, I do still have several satin blouses and a couple of satin dresses too, but they are too dressy, so I only wear them on special occasions.”

“Ah-huh!… I knew it; you wear satin because it feels nice. You admit satin feels nice and makes you feel sexy,” I said.

“Yes… Yes it does,” replied Kelly, as she picked up her paintbrush and continued with her painting.

“So do you feel sexy now wearing that lovely satin-slip?… And would you normally open the front door in just your slip?” I asked curiously.

“I guessed it was you. You normally come round on a Saturday afternoon,” replied Kelly.

“You would have had a huge shock if it had been some stranger at the door. Or maybe that would have given you a thrill, eh?” I suggested.

“Don’t be daft,” said Kelly, blushing.

As I stood watching my sister painting in her lovely black satin-slip, I grew more aroused. My cock was getting hard with incestuous thoughts running amok in my head. I moved closer behind Kelly, placing my hands on my sister’s tiny waist, caressing that lovely black satin material.