A/N: Relationship clarification
Thomas and Tracy are married to each other, and Thomas is approximately in his 50's and his wife Tracy is still in her 40's. Their nieces, Cassandra and Elizabeth are both 18 years old, starting university, and they are Tracy's sister's children!
Uncle Thomas
My wife smirked once we entered our penthouse and my nieces brought their suitcase towards their shared bedroom. She winked at me, crossing her arms, "They grew up well, did you see their tits?!"
"Of course I did." I replied.
She wasn't lying because the twins had definitely grown up well. Filling all the edges of their girlish appearance with womanly curves. Elizabeth, little Lizzie, was the perfect picture of an American bombshell. Blond hair with some of the bluest eyes that I have ever seen, and an hourglass figure to go along with her appearance and the biggest breast I have ever seen—I'm not even sure where she got her breast from.
Certainly not from their mother.
Cassandra on the other hand, was an identical twin to Lizzie, but she had short hair around her shoulders and had a slight darker blonde shade paired with a more greyish taint in her eyes. She also had an hourglass shape like her sister although she was a little less blessed in the breast department but still, she had ample amount of breast.
Either way, both tits in question belong to our nieces, Cassandra and Elizabeth, who were staying with us for their journey as university students. Their family lived in the outskirts of Northern Ontario and unlike us, weren't rich enough to afford a nice place in downtown Toronto. Plus, there was no way their parents were going to find a new job position down here so my wife and I offered up our third bedroom for them.
They had eagerly accepted.
Thus, both twin girls were staying with us. Elizabeth and Cassandra were nieces from my wife's side of the family and certainly have grown rather way too beautiful since the last time I saw them.
Today was Monday and they still had at least a week before their school began, we have been helping them move in for the past two hours. Clearly old age was catching up to me, but then again, I would think I am pretty fit for a 50 years old man.
Although a little bit of a belly, but somehow exercise can't seem to fit it. Old age was a pain in the ass. My wife was texting on her phone, most likely to inform their parents that the girls were officially moving in. I led my wife towards the couch and we sat down, and I finally had the time to recall the images of our sweet 18 years old nieces—and they were gorgeous little vixens!
"Uncle Thomas, Aunt Tracy?" Elizabeth came out in a pair of loose nightgown that was hanging mid-thigh with a dipping neckline that left little to imagine. I squinted my eyes because the light behind her was making her tiny nightgown transparent—and little Lizzie wasn't wearing any bra!
"Yes, Lizzie?" Tracy answered.
"Thank you for letting us live with you." Elizabeth came over in front of me and my wife. She leaned in to peck my wife on the cheeks and I eagerly welcomed her as well, ogling at the dip of her neckline and she wasn't wearing a bra. I grabbed her to return a peck back which caused her to giggle. "Goodnight Uncle."
Tracy smiled, and found Cassandra following suit. I didn't even notice until Cassandra was in front of me—this time, Cassandra was wearing a little tight black tank top paired with small booty shorts that was being eaten up by her ass. I swallowed nervously as she kissed my cheeks and said her goodnights.
The next morning, I rolled out of an empty bed, groaning because my wife had left for work. Tracy had always been a workaholic, so it left me pretty much alone in the penthouse about 90% of the time and I was retired so there wasn't anything for me to do but now I had a little more companion with my nieces around.
I came out to the kitchen and started prepping for breakfast, some simple recipes, pancakes, eggs and bacon—I was halfway to finishing when someone came up behind me, eloping me into a hug. The firm press of breast against my back.
"Morning, Uncle..." Elizabeth mumbled.
I smiled, turning around to sweetly hug my niece—this little vixen was trying to encourage my morning wood so early in the morning. I gave her a sweet peck on the cheeks, and she returned one to me. Her chest was firmly pressed against mine, and I eagerly look down at her tits.
It was an endless valley of tits.
Elizabeth was still wearing her nightgown and I could feel her nipples through the thin material. Since, we were alone, I could finally appreciate what she was wearing. It was a tiny white almost transparent nightgown that only came mid-thigh and I was pretty sure that if she bend over, I would get a nice glimpse of her panties. The nightgown also had a plunging V-shaped neckline displaying a good portion of her impressively large tits for an 18 years old girl and impossibly deep cleavage.
"Morning Lizzie. How was your sleep?" I asked while caressing her back, getting dangerously close to her ass but not quite touching it.
"A little weird. I have never slept so high up!" Elizabeth giggled, and she remained in my arms while we continued to chat. She didn't seem to see how I was caressing her body up and down, from her back to her legs.
"I'd say. Do you have any plans today?"
We finally parted, and I decided to let her take over cooking.
"No. I was hoping to stay at home and relax because the whole moving process was difficult and tiring."
I help Elizabeth put on the apron, typing it around her tiny waist and she seem eager to make her first meal of the day. I sat back, watching her move confidently around the kitchen. I watch her strut around the kitchen, her sweet body on display—a guy had to appreciate what looked gorgeous and my niece Elizabeth was one gorgeous woman and whoever marries her was going to have the time of his life.
She bend over the counter and I swallowed nervously as she presented her ass to me, her white panties being exposed. I finally decided to walk behind her to lean over her shoulder to see her progression in our breakfast plus it gave me a brilliant view down into her mind-boggling cleavage.
I gave an approval hum and patted one of the firm round globes of her buttocks, my body tingling as I got hold of her sweet perfect bottom, my fingers sunk into the glorious softness of her ass and she tremble under my hold.
"Oh Uncle!" Elizabeth yelped, a blush spreading on her pretty face and I smiled.
"Just a little pat to let you know how well you are doing!" I assured her, doing my best to look nonchalant but inside I was fighting the urge to give her big tits a great big squeeze through her thin nightgown. I was satisfied since I managed to touch her panties and a little more and I would have been able to touch her sweet cunt.
"Oh uncle!" Elizabeth shook her head, "You could have just praised me!"
"You know me, I prefer to physically praise people."
Elizabeth seem appeased by my reply. "Alright, but warn me next time."
"Of course," I replied, grinning widely. I kissed my niece on the cheek as she continued to cook, she looked at the clock and turned back to me, "Can you get Cassie up?"
"Of course."
I reached around and gave her another quick squeeze on the butt and then I hurried headed towards their shared bedroom. My cock strained in my pants, the memory of the way her lovely round butt cheek had felt against the palm of my hand would certain fuel my fantasies tonight.
After a minute to deep intakes of breath, I opened the door to the guest room and sure enough, Cassandra was still in her tight black tank top and her booty shorts that left little to imagine. A pillow encased in between her legs.
