26-year old Hannah looked at herself in the full-length mirror at the end of the landing. She held herself gracefully, gliding through life with a dancer's ease, her slim, 5'6" frame curvier than you'd expect. Her legs were long and slender, her bottom peachy and soft, hips pleasingly wide, waist impressively narrow. Her breasts were firm, a 32D although they looked smaller as they stood high on her chest. Her impish good looks were complemented by glossy, shoulder-length black hair and penetrating, intelligent brown eyes. She was dressed for bed, in nothing but some white, satin-effect, bikini-style panties.
After studying her reflection for a moment longer, Hannah turned to look at her sister, Penny, who was sitting in the bathroom, perched on the edge of the tub. The family resemblance was strong, and although Penny was two years younger, the girls were often asked if they were twins. Penny's body was similarly slim, toned and curvy – her bottom was a little fuller, her 30C breasts a little smaller and her raven hair was set off by deep, sparking blue eyes. Her looks were softer, her features communicating innocence and naivety where Hannah suggested playful, wilfulness. Penny was also ready to turn in for the night, but her outfit was much more conversation-worthy – white, lace-frilled ankle socks and a transparent, white babydoll negligee revealed her smooth curves, and also revealed the disposable diaper she wore.
Just finishing up brushing her teeth was the third sister – a step-sister, actually – Natalie. She was just as beautiful as Hannah and Penny, but in a different way. 20-years old and, at 5'2", shorter than her sisters (although not related they'd been raised together since Natalie was young and they all considered each other family) Natalie had an open, expressive face, a wide mouth with full lips, cheeky green eyes and an unruly tumble of deep, auburn hair. Her body looked like a teenage boy's cartoon of a girl, huge, pillowy 34F breasts over, a narrow, gym-toned waist that flared out to her round, full bottom (buying clothes was a nightmare!). She was wearing her favourite knickers – white and candy-pink hooped bikini briefs and a simple, white t-shirt, which fit loosely other than where it strained across her boobs.
Hannah admired Natalie's bottom and the way it filled the seat of her white and pink knickers in a way that would have made their parents very uncomfortable. Of course, their parents did not know that the three girls had been engaged in a three-way, incestuous, lesbian relationship with each other for the past year. They'd explained away Penny and Natalie moving in with Hannah as simple economic prudence, and at every other family gathering one of them would take a man, just to fend off any suspicion, however unlikely that may be. After all, their parents could not begin to imagine the scene that was about to play out when the sisters were all ready to go to bed. Or rather, their special bed. Hannah's house had two bedrooms. One was used infrequently, a clean and Spartan room containing a comfy bed for when one or more of the girls needed a good sleep. The other room was where they headed now, Hannah looking serious, Penny looking sheepish and Natalie giggling to herself.
The second room contained two beds – one a king-sized, normal bed, the other a single bed-sized baby crib. There was also an armchair, a desk and a chest of drawers. It was in the crib that Penny slept most nights, as during the last year she had realised and accepted her sexual nature – she was a submissive with no limits she'd yet found, who was sexually attracted to her sisters and loved to be treated as a baby. She wore and used diapers much of the time, and was usually in baby mode in the house, dressed as a cartoonish corruption of a toddler. It was with Natalie that Penny had first explored this side of her nature – a good place to start, as the voluptuous girl was a sexual deviant of almost every stripe. She'd tried and enjoyed most things you could imagine, but the twisted and submissive time she spent with her sisters was her favourite. The fact that the two younger sisters were submissive was perfect so far as Hannah was concerned, as spanking, punishing and dominating her sisters was just about her favourite thing in the world. Well, alongside her own peccadillo, anyway – though she never used diapers, she also hardly used the toilet, loving the feeling of pushing out a large pile of poo into her knickers. Together, the sisters were a stinky, kinky trio, who loved each other deeply, just not how their family might prefer!
Tonight was a Friday, which meant only one thing in Hannah's house – no limits. Nobody had to be up for work the next day, nobody had any conflicting arrangements. Friday's were kept free and clear so that the sisters could indulge. They'd all had plenty to eat and drink and were ready for the fun and games to commence. What actually happened each Friday would vary, depending on what fun they'd had during the week. This week had been busy, though, and Natalie had been away on a course for most of it. In fact, other than a spanking Hannah gave Penny on Tuesday evening, they'd barely seen each other, so a whole week of sexual tension had accumulated for them to work off.
