Karen phoned me a few days later and said she had another shoot lined up for Pippa, and this time she would be with another girl called Amy.

"Now Mary, I'm sure you've realised what sort of photos I sometimes produce and what kind of market they're for," she discussed with me over the phone, "so I wanted to make absolutely sure you know what I'm going ask of your daughter and that you're OK with it."

"Karen, as long as Pippa is happy to do what you ask of her then I'm happy too," I told her, wondering just where all this would end, "all I need to know is that there aren't going to be any men in the equation."

"Oh God no!" she assured me, "I don't do that sort of photography - it's strictly females only!"

"Then we will be there Karen," I told her, already getting a little horny at the prospect of my Pippa with another young girl.

Since that first shoot it had become clear that my darling Pippa had hoped for something to happen between the two of us, and to be honest it nearly had, but I was still telling myself that it would be wrong of me to do so; no, logic clearly didn't get a look in, as I had watched my daughter strip for another woman, masturbate for her, be photographed doing it and then watch as that woman ate my little girl's pussy out!

It didn't help that Karen had let us keep some of the undies Pippa had modelled, and Pippa would sometimes walk around the house in just her undies, clearly trying to make me give in and fuck her. It was agony for me and I spent hours in my bedroom masturbating furiously, dreaming of doing that which I would not let myself do. Something was going to have to give soon and I knew I would either go mad or give in - question is which would happen first?

So, come the time of the next shoot we arrived at Karen's place and there we met Amy, and her mom Jill. Amy was 11 and just a little bigger than Pippa, with amazing big blue eyes and short brown hair, and when she grew up would no doubt be as attractive as her mom, who was about my age and build.

"So this is only Pippa's second shoot?" Jill asked me after we'd all been introduced.

"Yes, but she seems to have taken to it like a fish to water," I replied.

"Well, Amy will take care of her," Jill assured me, "she's getting to be an old hand at this, and she is such a lovely girl."

"She's done a lot of this then?" I asked Jill as Karen sorted the girls out in the changing room.

"Oh yes, coming on for 2 years now," Jill said all matter-of -fact, "and of course we've been sharing the same bed almost ever since. I take it you and Pippa...?"

"No, not just yet," I confessed, blushing for some strange reason, "I can't quite bring myself to do it."

"But you want to don't you?" Jill said, leaning in closer and putting a hand on my upper arm, "you spend hours agonising about it, and masturbating about it don't you?"

"You too?" I asked her, seeing the truth in her eyes.

"Yes, months of anguish and heartache before I bowed to the inevitable," she confessed, "and I wished I had done it earlier. Mary, it's so good I can't begin to tell you!"

"Well, I don't know..." I replied quietly.

"It's not something I can force you to do, but eventually you will give in, and you will be so happy!" Jill said with a smile on her face, "I promise you."

Then, before I could answer, the girls came out and I felt that tingle in my groin. Pip and Amy were dressed in very tarty school uniforms, with tight white tops, very short pleated skirts, black stockings with suspender belts and tight white cotton panties; Pippa had her hair up in two cute pigtails. Jill and I groaned lustily at the same time, and we looked at each other and smiled.

The set was a king size bed in a room made up to look like a little girls room, all pink and fluffy, and Karen started the girl off with lots of innocent poses that still kept revealing those wonderful panties. Jill and I sat on the sofa and I could see that she was getting as turned on as I was, that familiar uncomfortable look when your panties are getting damp and you really want to touch yourself.

Soon Karen had got the girls kissing and touching each other and I was in serious need of some relief. Fortunately Jill came to the rescue - she slid closer to me and without saying a word put a hand on my thigh, squeezing it as she slowly pulled the hem of my dress up. I looked across into her eyes as she kept inching my dress up and I parted my legs as wide as I could, her fingers now stroking my inner thigh.

This isn't new territory for me but I've not felt the touch of another in so many years, and I'm shaking a little as Jill's fingers touch me through my panties. She changes hands as she turns around and her other hand is now holding the back of my head, her intention clear. I offer no resistance as I close my eyes, feel her breath on my face and then she's kissing me as she rubs my pussy through my wet undies.

For a little while the girls are forgotten as I trade tongues with Jill, her fingers pushing the material of my briefs into my slit, making me groan into her mouth. I realise my hand is on her thigh and I stroke and squeeze it, enjoying the warm softness of her skin as she makes me very wet indeed. When we come up for air we see that Karen is shedding the loose summer dress she was wearing and is completely naked underneath as the girls kiss and grope each other, squeezing soft firm buttocks through tight white cotton.

"Shall we undress too?" Jill asked me with a look of lust in her eyes.

Yes, I think we should," I croak as I feel my pussy tingle and twitch. Jill slips my dress from off my shoulders and lets it slip to the floor to reveal my swirl embroidered bra and knickers. I helped Jill out of her top and skirt to reveal a black lacy bra and bikini knickers. We kissed a little gentler this time as we helped each other out of our undies and I was excited to see that Jill had made her knickers wet - although not as sodden as mine were!

We sat back down on the sofa together, legs spread and crossing each other as we gently played with each other's wet slits. Our girls were by now minus their tops and were taking turns to suck on each other's little titties, such as they were, and their nipples were hard and wet with saliva. Karen had them arranged so that their legs were spread and their tight panties on full show, both of them having darker wet patches.

Jill and I shared soft and gentle kisses as we teased each other, watching and loving the action unfolding under Karen's expert direction. Skirts were now discarded to leave them in stockings, suspenders and panties - there is something so wonderfully naughty about little girls in adult lingerie and my darling Pippa looked stunning. Amy did too, and the combination of both of them being intimate in front of us had my cunt juices drooling from me.

"Mary, you're soaking wet - let me lick you!" Jill asked me between kisses.

"Please, I need to cum!" I gasped.

Jill slipped onto the floor, on her knees between my legs which she pushed up for me to hold apart. I gasped as she fastened her mouth to my soaking wet gash and started to lick and suck me. I watched the girls as Amy said something to Pippa and Karen, and all three of them smiled as they watched me being eaten out by Jill before returning to what they were doing, which was kissing and rubbing each other's panties.

Jill's tongue felt amazing in my slippery pussy and I knew that a big cum wasn't too far away, especially as I watched the girls performing for Karen. Jill was sucking on my clitty as I watched Amy kneeling behind Pippa, kissing her neck as she reached around, a hand down the front of my daughter's panties. That was all I needed to trigger my climax and I ground my sloppy cunt against Jill's face as I orgasmed loudly and messily.

Jill smiled happily up at me as she feasted on my juices before rising up, sitting astride my lap and pulling my face to hers, giving me a deep, hot kiss and letting me taste myself. I knew that Jill would expect me to return the favour and I wanted to - it had been so long since I'd done this and I was so horny, but right at that moment I really wanted to watch the girls.

Jill clearly understood and we snuggled up together on the sofa to watch our beautiful girls perform for Karen. She was putting them into poses where they were taking it in turns to rub the other's panties and put their hands inside. It was all very horny and exciting for me to watch my Pippa happily, willingly do all this with another sexy and beautiful girl, and I was so wet at the thought of watching these two angels making love.

"Isn't it just the most beautiful thing you've ever seen?" Jill asked me quietly as we watched Pippa slowly removing Amy's panties.

"Yes, it's unbelievable," I croaked as we almost absently caressed each other's naked bodies as we watched, "I just never realised how good it could be - being a mother that is."

"When you do give in and surrender to it you'll find out it's even better!" Jill gasped as my fingers lingered over her clit, "please, make me cum now before our girls do it!"

She turned herself around on the sofa, one foot on the floor and the other over the back of the sofa, and I dived down between her legs to start lapping at her wet slit. Jill tasted good and as I licked and sucked on her wet folds and enjoyed the taste of her cum I shivered as imagined doing this to Pippa, replacing this grown woman's meaty and swollen pussy with her little pink slit - it was only a matter of time wasn't it?

Jill was getting very wet and starting to buck about on the sofa, and before too long she was cumming, filling my mouth with her tangy juices as she held my head to her groin. We shared another creamy kiss when I surfaced for air and then we turned to see what our daughters were doing. Amy was flat on her back, with Pippa on all fours between her spread legs, her bare ass in the air and her face in Amy's pussy.

"Look at your daughter's pussy all wet and glistening," Jill murmured in my ear, "you can't resist that can you? You want to eat it like you just ate me."

"You know I do!" I groaned as I stared at Pippa's pussy and ass, her little bumhole on display, "but she's my daughter!"

"All the more reason that you shouldn't feel guilty about it," Jill purred as we watched Karen kneeling behind Pippa to get some great shots, "I bet you let Karen fuck her last time didn't you?"

"Yes, I did," I replied softly, thinking back to that and remembering how turned on I had been watching the woman eat my daughter's slit.

"So you'll let others have the pleasure of your daughter's body but you deny yourself?" Jill countered, her fingers finding my clit and teasing it, "there is no greater love, no stronger bond, than that between a mother and her daughter, and to express that love as I do with Amy will only make it better."

"I guess so," I groaned as Jill teased my slit with her fingers, knowing she was right, "but not here, not now."

"I should hope not!" she chuckled as she moved her hand up to my breasts and rubbed my juices into my skin, "that has to happen in your bed!"

The girls were now locked in a 69 and looked so hot and sexy with their slim legs clad in those black stockings, skinny little naked bodies locked together as they eagerly ate each other out. Karen was moving all around them taking shot after steamy shot and all I could see in my mind was swapping places with Amy and having my darling daughter on top of me. I shivered with suppressed lust and desire, aided by the fingers moving in my pussy and the lips nuzzling my neck.

By the time Karen was finished shooting our girls the studio was heady with the scent of all that aroused pussy and I knew that more sex was imminent - everyone was just so horny! We got up and went over to join Karen and the girls on the huge bed and I gave Pippa a big kiss, telling her how wonderful she had been.

"I saw you and Amy's mummy together," she said to me as I stroked her stocking-covered thigh, "will you do that to me now mummy?"

"Oh baby, I will, but not here," I murmured, "I want that to be special, just the two of us."

"I understand mum, and thank you!" she said excitedly, throwing her arms around me and kissing me with a passion beyond her years.

"I think we need to go home now," I said to Karen and Jill as they sat there watching us with big smiles on their faces, "I hope you don't mind?"

"I wouldn't dream of it being any other way," Karen chuckled as Amy played with her boobs, "you go and have a wonderful time with your daughter."

"Come by anytime Mary," Jill said as I watched her teasing her daughter's little slit, "we'd love to have you!"

So we hurriedly bunged some clothes on, most of our underwear going in my handbag, and we kissed them all goodnight before hurrying home to experience something wonderful...