Chapter 1: A Sunny Morning

It was a gorgeous summer Saturday morning. I stretched out luxuriously in bed as I gradually woke up fully, enjoying the soft brush of the sheets as they slid over my naked body and watching the sun streaming through the gap in the curtains across the room.

At last, I leapt from my bed and drew back the curtains properly, opening the window and letting in the fresh morning air. The slight coolness of it wafted over my skin, quickly waking me up properly and I felt my nipples harden as they cooled, my boobs going firm and taut. Just to think, only a few months back there was so little there. But these two mounds had been growing day by day and I now felt quite proud of them, even though they were still a bit small. I caught sight of myself in the mirror and smiled - soon the boys would all be chasing after me - my hips were rounding out quite nicely as well and my pussy had quite a fuzz of hair above it. I didn't look bad really I supposed - quite slim with shoulder-length fair hair, pale blue eyes and a slightly turned-up nose which I'd grown to rather like - it seemed to give me a sort of pixy look.

I ran my hands over my boobs, feeling the tightness and the stiffening nipples. It felt nice. I posed for the mirror, doing it again - then squeezing them up slightly to make it look as though I had some cleavage! I felt the nipples again - I didn't remember them being quite like this before - they seemed particularly prominent this morning. I suppose it might be just the cool air but it seemed a bit more than that somehow. I rolled one between my finger and thumb. Mmmm... not only did it feel surprisingly thick and swollen, it also felt really good. I tried the other and it was just the same. I watched myself in the mirror as I tweaked and rubbed them a bit more. They seemed just so big and firm now - and almost glowing somehow as I felt this urge to rub them more and more.

It struck me that with them like that, they'd really be obvious if I wore a T-shirt without a bra - even with a bra, they'd probably be pretty clear. I pulled one of my fresh tight T-shirts on and looked at the effect. The smooth material felt good against my bare skin. I looked at myself again - yes, it looked really sexy! My nips were standing out like little thimbles against the tight material. I rubbed them briefly over the T shirt and found it difficult to stop! I squeezed the whole boob and it was as if the whole thing had tightened up, and got more sensitive. I turned sideways and looked at my profile. They were quite nice rounded swellings now, but they were really firm still and the hard nips were thrusting out quite blatantly.

"Wow, sis, you look just so sexy!"

I jumped in surprise as my little sister Abi poked her head round the door looking at me. "Hey, what are you doing spying on me?" I asked, semi-jokingly "Don't you know to knock on someone's door before coming in!" I felt quite self-conscious and quickly pulled a robe around me, feeling my cheeks start to go red. But she was complimenting me after all so I didn't kick her straight out! "Do you really think I look sexy though?" I asked hesitantly. It was good to get a compliment, especially from my little sis who was usually just a pain.

She took a step in through the door and I saw she was wearing just her sleep shirt which barely covered a pair of pink panties, her hair still tousled and looking as though she'd just stepped out of bed too. Even though Abi was only about fifteen months younger than me, she still had quite a boyish figure with just the first swellings of boobs and a mop of light brown hair on her head, just a bit darker than mine, and cut a little shorter, and large blue innocent eyes. She smiled, that really sweet affectionate smile of hers, and her eyes looked over me again. "Well, it would help if you hadn't covered yourself up with that robe" she laughed "but that T-shirt looked pretty good from the brief glimpse I got of it, not to mention the cute legs beneath it!"

She pushed the door to behind her and came in and sat on the bed. "Go on, take the robe off again! Let me make sure I didn't imagine it!"

"But I've got nothing else on" I complained, chuckling.

"Well, you can slip some knickers on first if you prefer" she giggled, "I don't think that'll ruin the effect!"

I guess I must be a sucker for compliments because I agreed. I pulled a fresh pair of panties out of the drawer and slipped them on under my robe. Now I felt a bit more secure!

"OK, if you insist" I laughed, and slipped the robe off again. I glanced down at myself. My nips didn't seem quite so obvious now, but they were still pretty clear. And I still fancied giving them another little rub! I did an exaggerated pose for Abi, feeling quite wicked! "Well, what d'you think?"

"Wow! What happened to that big sis I used to have?" she laughed, looking at me with open admiration. "I don't suppose you'd like to go on doing what you were doing when I first looked in would you?" she asked, slightly hesitantly. My face flushed again with embarrassment as I realised she must have seen me playing with my titties. "You don't have to be shy" she said sweetly "it's just you looked like you were enjoying it so much - you just looked so happy!"

I felt conflicting emotions race through me. My first reaction was to shy away from the very idea of letting her see me doing that, but something stopped me. She was looking so eager, so enthusiastic at the thought, and my titties really seemed to be aching for my touch again. "I was enjoying it" I agreed, "I've never really done it that much before, but I was really getting into it - it really felt good. OK, if you like, just a bit then" and so saying, I hesitantly raised my hands and ran them gently over the bumps in my T-shirt. It felt really lovely still, like they'd been longing for me to do that again. I pressed a bit harder, squeezing the taut flesh a bit - and as I did, I felt the nips harden again under my hands, just like they were welcoming the attention and expanding in appreciation. It felt really great and soon, I wasn't doing it for Abi but for myself.

As I did it, I kept glancing at her sitting on the bed watching me. Her eyes were wide, her face a picture, her body quite animated. And her hands were in her lap pressing down against her panties! I felt just so alive, a strange but exciting tingle running right through me. And every time I squeezed my nips, which were now as hard as ever they were before, a gorgeous extra tingle shot through me.

I paused briefly and glanced at Abi again. "Well, what do you think?" I laughed. "I hope you're enjoying it as much as I am!"

"Wow!" breathed Abi, "I wish I had boobs like you. It looks like it's such fun and I can see how you love it. It's really exciting to watch as well. I don't know why but it's getting me really hot sitting here watching. I wish I could have just one touch of them. Your nipples just look so fantastic stuck out like that! I've never touched proper breasts you know - I haven't really got anything yet, and it's different touching yourself anyway- and yours look just so cute now"

My fingers kept toying with my agitated nips as I listened to Abi. She wanted to touch me! I should have been repelled. I'm sure a few months ago, I would have been. But this morning the idea didn't seem so bad! In fact, I started wondering what it would feel like to have her little fingers on me - and for some reason, it seemed quite exciting. And it seemed a shame to deny her - if she'd never had the chance before. My whole body seemed to be feeling really alive and tingly, particularly around my titties and now, I suddenly realised, around my pussy as well.

I looked coyly at Abi. "Well, you can have a quick touch if you like" I chuckled, "I guess it might be fun!"

Talk about 'the cat that got the cream'! Her face lit up and she almost leapt up. I looked at her. Her face seemed quite flushed and I could have sworn that those baby titties topped with the little bumps of her nipples seemed a lot more obvious now than when she first walked in. She suddenly noticed my gaze and looked away slightly embarrassed.

I chuckled "Well, maybe you could return the favour after you've felt mine - I think maybe you've developed a bit yourself recently!"

She couldn't really refuse but I could see she was a bit shy about it. I really fancied seeing what those little developing titties looked like!"

"OK, then, if you really want to" she said uncertainly, but she was really keen to touch me now I'd agreed, I could see. There was no way she was going to back out now!

"Great!" I said enthusiastically, and then chuckling "Come on then, come and tell me how great these feel!"

She needed no more encouragement. She stood up and stepped across to me. But then she paused, not sure how to go about it. I turned away from her to face the window. "There you are. Step up behind me and slide your hands round under my arms".

I dropped my own hands down out of the way. Still no movement. "Come on Abi, don't be shy. I know you want to, and I quite fancy seeing what it feels like as well now"

"OK" she almost whispered, and I felt her hands on my waist, very tentative. I shivered. It felt strange but quite pleasant. Then I felt her fingers sliding up very gently over my T-shirt, very cautiously - until they just touched the very first hint of a swelling of my breasts - and then she stopped. My heart seemed to be beating twice as fast suddenly. I found I was willing her to keep moving - I really wanted to feel those hands on me now.

"That's fine Abi" I whispered encouragingly "Keep going!"

There was a long pause and then she finally summoned up her courage and I felt her fingers slide over the firm rounded bumps and on to the quivering nips. She very gently moved her fingers over them and stopped. "Oh my God" she moaned "Liz, they're fantastic!"

"Do you really like them?" I asked. I knew the answer, but it felt so great having her say it!

"They're gorgeous!" she went on "I can't believe how they've grown so much without me really noticing before"

"You don't have to be quite so careful you know" I said encouragingly, "You can move your hands around, feel them properly if you like. It feels really good!"

"Really? Hey, if you like it too, that's just perfect!" she enthused, and started moving her fingers about, running them round, tracing the outline of the breasts, then coming back to my nips and tracing round those.

"They seem to quite like being squeezed slightly" I laughed, "if you want to try!"

Eagerly she took the nips between her fingers and tweaked and pinched them very gently, screwing up my fresh T-shirt even more. Flashes of pure excitement seemed to shoot through my body.

"Wow Abi, it's weird. It felt really nice when I was doing it. But it's different with you - it seems even more exciting somehow."

She kissed the back of my neck affectionately. "I told you how sexy you looked!" she chuckled "But it's not just how you look is it. I think you're really sexy inside as well! Still, I think I've got the same genes, 'cos it feels really good to me too!" I felt the two little points of her nipples brush against my back, like two hard little buttons. She let out a little sigh of pleasure.

"Does that feel good?" I asked.

"Mmm, yes, lovely" she laughed "Can I press a little harder?"

If it was so easy to give her pleasure, why not! "OK, if you like" I said "but first, you're ruining this T-shirt, screwing it up around my nips like that. Maybe you should put your hands underneath it. Hell, maybe you might as well just take it off!" I couldn't believe I'd just said that - what was getting into me?! Offering to strip off in front of my little sis? But suddenly it just seemed like it would be fun.

"Oh, wow, fabulous - are you sure?" she muttered, "that would be great. Here, put your arms above your head, and I'll lift it off" and so saying, she slid her hands down to the bottom of the shirt and lifted it up and over my head. I shook my long fair hair back into place and felt the fresh air on my nips again. But not for long. Abi couldn't resist sliding her hands back over them as soon as she'd tossed the T-shirt to one side. Her fingers on my bare skin felt even better and I found myself letting out a little murmur of pleasure.

"Mmm, yes Abi. I never knew anything could feel like this" and I felt the return of her little nips against my back. This time she sighed more positively and pressed up harder against me. Now I could feel the small but firm little bumps of her titties flatten against me and the cute little nips pressing into my skin! I couldn't resist wiggling slightly, agitating my back against her. She sighed a lot more and I noticed her breathing was getting quite noticeable near my ear now as her hands gradually gained a little more confidence on my boobs. It was then that I noticed I was breathing a lot faster as well - and I had a desperate urge to rub my pussy; it seemed to be really hot and itchy! But I couldn't do that with Abi standing there watching - I was far too shy.

I was longing to have a look under her T-shirt though, so I thought it was time for a break! "OK then, now it's my turn to play" I laughed. "That was great and you can do it again later if you like, but I fancy a look at what's been growing under that shirt of yours. Not that you've been hiding them very well!!"

"Oh Liz, I was having a fantastic time there" she moaned "I just can't believe I've suddenly got such a sexy big sis!"

I laughed "I'm not sure I'd have believed it yesterday either - but I guess we must be both growing up a bit! Come on then, I'm dying to see what that was trying to bore two little holes in my back!!"

I slipped out of her arms and turned round to face her. I was naked except for my panties of course and felt a brief surge of shyness as her eyes went straight to my bare titties. But I pushed it to one side as noticed how flushed she looked and how hard the points under her shirt looked - they seemed to be like two little fingers trying to push out!

"Come on then" I laughed, "time to return the favour. I don't see why I should be standing here half naked when you're all covered up! Let's get this night shirt of yours off!" She looked a bit embarrassed but didn't resist me at all when I reach down and lifted the hem up. "OK, arms up" I laughed, and she did, as I slipped the soft warm material up and over her head.

"Wow, Abi!" I breathed "it's not just me that's been growing is it! You were quite flat last time I saw you. Just look at these now! You've got real little swellings and look at those nips - they're so big for your little boobs! Do they feel good?!"

"They felt great pressed up against your back just now" she giggled.

I reached out and ran my fingers over them. My own seemed to tingle more fiercely as I touched hers! They were lovely - she looked so sweet and innocent with such tiny little bumps for boobs still - and yet, the nips made me realise she was clearly not so innocent - my little sis was definitely turned on! She jumped slightly. "How does that feel?" I asked, "is it nice?"