The other side was a huge glass window!
And beyond the transparent barrier was a spacious bedroom containing a bed that could have been a sister to the one in her room. She then saw the occupants of the strangely windowed room-Paula and Kate.
The stepsisters stood at the side of the bed nearest the glass. They were dressed only in panties and bras. The remainder of their clothing was strewn on the floor at their feet.
As Diana watched, confused by the unexpected sight, the two young girls stepped to each other. Their hands reached and touched for a brief instant. They smiled and spoke, but Diana was unable to hear what was said. But when they suddenly embraced in an open-mouth kiss, their arms wrapping around each other tightly, there was no doubt in her mind as to what had been the substance of their brief exchange.
Diana found herself mesmerized by the alluring beauty of the young, half-clad bodies pressed together in voluptuous pleasure. Unexplainable shivers coursed through her as she watched their still forming breasts press against their near nakedness; the whiteness of their flesh attempting to spill out over the confining cups of their bras.
Their lips worked together. She felt a dampness welling within her as she detected the flurried pinkness of their exploring tongues dance back and forth into their mouths, probing and teasing each other.
Unable to withdraw from her voyeur's position, she stared as their hands slowly roved over the gentle curves of the backs, slipping along the slopes of their spines to the pert roundness of their asses. Their fingers toyed and played, ducking under the elastic of their panties to soothingly caress the tantalizing cushions of their hindcheeks.
As she watched, the blonde-haired Paula stepped away from the embrace.
Her arms reached behind her back and easily unclasped the tiny hooks holding her bra. The white garment fell away to join the rest of the clothes on the floor. Her tits, young and firm, did a bouncy little dance, eventually standing from her chest like two proud cones of beckoning delight.
While the black-headed Kate at her side and Diana, from her position behind the glass, gazed with admiring eyes, the slim blonde tucked her fingers under the band of her panties and slowly wiggled the nylon briefs downward, over the youthful curve of her shapely hips and an equally shapely pair of sleek, supple legs.
Holding her hands out, she summoned the younger girl to her and their mouths joined once again. This time Kate's slim, graceful fingers were given full rein to her partner's body. Lightly her fingers fondled the smooth texture surface of the unblemished skin. Downward they traveled once again finding the tempting slopes of jutting rear mounds.
She grasped, her hands squeezing into the softness of the other girl's ass with almost brutal force. Heated, red ass flesh squinched up between her fingers as she kneaded the plump curves. Over and over, her eager hands squeezed and moulded tightly into the pliant cushions.
Then her fingers were moving again-moving toward the deep crease separating the firm buttocks. Taunting, her fingertips toyed up and down the dark, tight-pressed line. The naked girl pressed against the body of her manipulator, trembling and tightening her hold on the darkhaired beauty that teased excited thrills at her bottom. The naked cones of her tits pushed hard against her feminine lover, their firm shape flattening to balls of resilient flesh.
Still exploring, the titillating fingers delved into the dark crease.
In determined fashion they twirled and tickled, then there was a sharp plunge.
The naked blonde jerked rigid. Her mouth wrenched away from her partner's. With urgency, she pressed against the girl before her as if trying to mount her. Her red young lips parted in a silent moan of lust-pleasure as the still clothed girl's finger penetrated into the tight confines of her anal mouth. She clung to the black-haired girl as the spearing digit began to pump in and out of her asshole.
Faster and faster the finger of the younger girl lunged into the tight rectal pocket of her partner's rear. In penis-imitating fashion, she worked her attack. In and out she drilled into the volcanic fire of the squeezing hole. Out and in, her finger speared toward the back recesses of the ass she now possessed.
The long strands of blonde hair flew like a furious mist of gold, as the older youth received every lancing impact of the finger-fucking she was getting. Her head rolled on her shoulders in wanton abandon. Her mouth was open in a constant groan of growing lust.
In an almost subtle movement, the dark-haired girl slipped her free hand from the ass it held and slid it around to the soft blonde pubic moss covering the exposed cunt that was open to her. With little or no difficulty, she tickled a finger upward into the waiting lips of the hungry pussy before her. Matching the rhythm of her poling finger in the rear, she plowed into the silken, wet vagina with her newly entrenched finger.