Heidi pulled back the curtains of the bay window and looked out of her second story bedroom. The sun was shining and the blast of warm, refreshing air hit her face as Heidi opened the windows wide. She glanced at the full length mirror standing alone in the corner of the room and looked the reflection of her body up and down. “Not too bad for 36,” Heidi smiled, running her hands along her neck, down to cup her large C-cup tits encased in a lacy white bra, then moving further down to her flat stomach, which she spent hours a week at the gym to keep. A finger played briefly with the little diamond piercing in her bellybutton, an acquisition recently gotten, before gliding down past her pussy, clad in matching white lacy panties.
“Not too bad at all,” she smiled, when out of the corner of her eye she saw some movement outside the opened windows. Heidi turned away from the mirror and gazed down to the backyard, where she saw Gretchen emerging from the in-ground pool, dressed in a skimpy black bikini. She walked over to a towel laid out on the grass and sprawled out on her back, taking in the rays of the early morning sun.
Gretchen was Heidi’s 18 year old niece, come to visit for the summer months, while her parents went through the painful process of a divorce. Heidi’s sister had thought it best if Gretchen stayed away while she and Heidi’s brother-in-law worked out the final details. So, Gretchen had moved into her Aunt Heidi’s house for the summer.
The two women got along very well considering their age difference, even though there was some very striking differences between the two. Gretchen was a very outgoing, confident, open-minded teenager who had just begun exploring life. She was a petite girl, standing about 5’2” and weighing just over 100 pounds, with short, dark black hair that barely made it past her ears. Gretchen inherited a natural combination of her father’s dark Latin skin and her mother’s fairer skin, giving her an light olive complexion that made her body glow. Her lips were full and pouty, giving her an innocent look. She had a lean and lithe body, going to the gym even before coming to live with her aunt. She had small and what could only be described as perky tits with nipples that always seemed to be hard. To round it off, her heart shaped ass was just too perfect for words.
Heidi was almost twenty years older than her niece, but her own body was in fine shape itself. Short, yet stylish blonde hair clung to her head, and hazel eyes looked upon the world. Her own body was in great shape, having tried in these years to keep up on her figure. Heidi was tall, standing at just under 5’9” with a well toned and sexy body. Long, well formed legs and a full, round ass made many a male turn their head. And while her niece's tits were small, Heidi’s were much larger, with very large, puffy nipples.
Gretchen had left behind a boyfriend when she moved out here for the summer, and had yet to meet anyone special enough to date. Heidi had had a string of boyfriends over the years, but recently had found herself in a dry spell.
Heidi found herself staring out the window, looking down at her niece. She watched as Gretchen’s tits rose and fell with each breath, and squinted to try and see any sign of those perpetually hard nipples. Heidi silently admonished herself for spying, yet did not turn away. She had caught herself staring at Gretchen more and more these past few days. Watching the way her body moved when they worked out at the gym together. Staring at the way her tight little ass swayed back and forth in those little sweat-shorts she wore to bed at night. Gazing long at the way her hard nipples always seemed to poke through whatever shirt or dress she was wearing. Heidi had started to become a little worried with herself. Her she was, staring at her niece, her own sister’s daughter with strange, lust filled thoughts running through her mind.
Heidi had never really admired a woman’s body before this. Sure, she could think that another woman was attractive, or had nice tits, or nice hair. But there was just something so sexy and innocent about Gretchen that made Heidi take notice. She knew the girl wasn’t a virgin, Gretchen had confided in her that fact on one of their first nights together at the house. But, the fact that it was her darling little niece was something that made Heidi swoon with unspoken lust.
Heidi watched as Gretchen turned over onto her stomach, and her tight ass came into view, the black thong bottom of her bikini hidden deep within the crevasse of that perfect ass. Heidi sighed at that wonderful sight and slowly slid her hand down along her panties. She moved slowly along the outside of her panties, feeling the wetness of her pussy seeping through the fabric. Heidi pulled a small wooden chair over to the window and sat down, placing one of her legs onto the window sill. She moved her hand underneath her panties, and gasped as her fingers traced along her naked pussy. She was extremely wet as she slid a finger inside and started to massage herself. She closed her eyes for a brief moment and imagined it was Gretchen’s finger inside her, her thumb rubbing Heidi’s hard clit.
Another finger slipped inside Heidi’s wet pussy, as her hips began to move against them. “Mmmmm,” Heidi moaned softly, as the two fingers began to move a little faster, soon being joined by a third fucking finger. She dreamed of Gretchen’s mouth on her tits, and pulled out one of her large tits, tweaking the puffy nipple between the fingers of her other hand. Heidi could envision the feeling of her niece's full lips sucking in her nipples, gently biting down on it.
“Oh God yesssss Gretchen,” Heidi moaned, pulling her nipple hard, as her fingers worked over her dripping pussy. “Yes sweetie, lick your Aunt Heidi’s wet pussy,” she whispered, moving her fingers faster. Her other hand left her tit and dropped down to resume rubbing her clit, causing Heidi to explode into an orgasm. “Mmmmm Gretchen, ohhh yesss baby,” she groaned in pleasure as her body almost slid off the chair.
Heidi opened her eyes after a few minutes and looked out the window, down at her niece. But Gretchen was no longer there, the towel gone as well.
The rest of the day Heidi couldn’t help but think about her niece sucking her pussy to orgasm. The times that they spent around the house, it was all Heidi could do to keep from masturbating right in front of her. Even though this was her niece, and Heidi knew these feelings were wrong to have, she felt so much desire for Gretchen that she could hardly control herself and had to retreat to the safety of the bathroom at least three times in the afternoon to finger herself to relief.
Late that evening, after a long day of hidden desire, Heidi entered her bedroom and got changed for sleep. She had just finished putting on her panties and t-shirt when she heard Gretchen enter the room.
“Hi Gretchen, what’s up honey?” Heidi greeted. Seeing her niece, dressed in a pair of small blue panties and her own t-shirt was already making Heidi’s pussy wet.
“I...I, umm,” Gretchen stammered, obviously trying to say something.
