Seduction.

Dahlia reached down and grabbed the bottom of her t-shirt. Hesitated a bit, like she was debating if she should really do this, then pulled it slowly off and dropped it next to the couch. She was wearing white cotton bikini underwear with little blue dots and a matching bra. The panties and bra both had little blue bows right at the front. They were not meant to be sexy, just a cute combo that any teen could buy at any store, but right then I thought they were sexier than anything that Victoria's Secret had to offer. She was just standing there, looking down, sort of fiddling with her hands. Her cute little figure was just there for me to stare at. She started to turn around slowly so that I got a good look at every side. Then she did something I wasn't expecting.

After her first turn, she reached behind her and started to unhook her bra. I couldn't have turned away if a car had driven through the living room wall. She got it undone and slowly pulled down the straps while keeping the cups in place. This wasn't some sort of dance or strip tease. This was an embarrassed 18-year-old girl letting a guy see her boobs for the very first time. She pulled the bra away and let it fall beside her discarded shirt. Damn! It was a beautiful sight. Her breasts were not large but more than I had realized she was hiding. Probably a full A cup (32A I later found out) that was perfect in every way. They were small half domes that sat high and firm with no idea what the meaning of gravity was. Her areolas, almost dead center, were the size of quarters and a dark pink that made them stand out from her pale skin tone. Although it was quite warm, both were capped with small nipples that popped out and hard. They had a small amount of freckles over them that just added to the complete cuteness of the whole package. When she started to move a little, they hardly jiggled. So firm and perky, I wanted to jump up and take them in my hands and kiss them.

I let my gaze wander down her body. Her stomach was as flat as a board. Her waist was tiny, and bloomed out to well-shaped hips. Small, but perfectly in proportion to her small size. Her legs were lean and muscular.

Then she surprised me again. Her thumbs came down and hooked the waistband of her oh-so-cute panties, and she bent toward the floor and stepped out of them. At first, I thought that she either shaved, or had yet to grow hair down there. However, at second glance I could see light blond wisps of mostly straight, downy soft hair in a triangle that was hard to take my eyes off of. I looked up to see that she was slightly smiling, but her face was no longer pink, it was bright red in her embarrassment. She started to turn around again, (I think to avoid eye contact as much as letting me see everything.) When she was facing half away from me, I started seeing the best part yet. Her well-toned backside was sticking out from her petite frame by a couple of inches. When she had her back to me, it just got better. A perfect heart-shaped ass!

Let me say I have always admired a well-formed ass. I have looked at them with pleasure since the day I knew I liked girls. I have seen a great many in my day, from girlfriends to strippers, p**n stars to swimsuit models, athletes to random girls on the street. I could go on and on about the merits of a firm, perky backside. My cute little 18-year-old niece's butt beats them all hands down! I know that there are many differing opinions between men about girls' butts, but there are some that are universally admired. This is one of those. Her legs went up and made a perfect ass of themselves. The holy grail of butts. Dahlia runs almost every day. She loves to hike, bike and even started working out at the gym with her track team this year. Even when at my house, she often rises before me and runs two to three miles. Her muscular butt is the trophy she gets for all this hard work. If you have never looked at a girl's track and field star from behind, I really suggest you try it. And right here, 5 feet in front of me was the nicest ass I have ever seen.

I really don't know how long I sat there. Dahlia did 2 or 3 slow spins and then stood still. 3 minutes 30 minutes? No idea how to tell the truth. I'm not really sure whether I even breathed. Dahlia let out a little giggle, and I was so glad to hear it that I snapped out of my trance. "What is it?"

She was looking down at the front of my shorts, where I was sporting a pup tent with the added bonus of a small wet mark. " It looks like it happened again," she said happily.

I was speechless as she was still standing there with nothing on but her rainbow slippers and a blush. "Well?" she finally asked. "Do you think I'm pretty?"

"Oh my God, Dahlia! "You are so far beyond pretty, I'm not sure that there is a word for it!" I replied without ever looking away from her beautiful nude body. "You are damn near perfect!"

She broke out in a huge smile that could have lit up the sky, her blush faded, and she stood up a little straighter, her breasts pressed out a little more confidently. She seemed to have totally forgotten that she was standing there naked. She looked both proud and extremely happy. "Oh Uncle Amias, do you really think so?"

I stood up from the couch, "Have you ever known me to lie?"

"Thank you!" She ran the 2 steps and jumped into my arms! I was standing there holding a gorgeous young adult without a stitch of clothes on. I held her close for a minute and whispered in her ear. "Thank you for letting me see all your beautiful secrets." I put her down on the ground. "Now I think you better get upstairs and get ready for bed before things get even more awkward." And without thinking, I gave her a soft playful slap on her bare rear end.

She looked me right in the eye and winked! Then let out a playful "Ummmm". She then turned and right in front of me she bent over and picked up her clothes. That wonderful ass in clear view. Then she slowly walked over to the stairs and turned for one last view of her breast. " I'll call when I'm ready for bed."

"Just go you little exhibitionist!" I half shouted, half laughed. And I'd be damned if my little, shy, innocent niece didn't wiggle her ass at me!

Well... with a smile that bright I figured I hadn't screwed her up too badly. I mean come on, all I did was a little harmless looking, right?

I grabbed the dirty dishes from the coffee table and took them into the kitchen. "OK you old perv," I said to myself. "That's it! "You had your fun looking at a young girl, but it stops right there!" I put the dishes in the sink and grabbed a glass of cold water. I kept thinking about that perfect petite body. I felt like I should feel guilty, but why? I didn't ask her to strip. I didn't molest her. She seemed so happy when she went up, and really didn't seem bothered by what had happened. Sure, I was going to masturbate like crazy tonight, thinking of my lovely niece, but what's the harm in fantasy? I guess I felt bad about not feeling bad.

After finishing up the dishes, a call came down the stairs."Ready for bed!"