Note: This story was dynamically reformatted for online reading convenience. My name is Lydia. I'm 11 years old and have brown hair in two pigtails. I have a boyfriend, his name is Tom. My sister, Ruby, is a year younger than me and we're really close. I never thought sex could be any good until one day last summer.  Me and Tom and Ruby were in the local park, me lying in the middle of Tom and Ruby. Tom was stroking my hair, and I was loving it. In the warm sun, I'd never felt to great. At this time, my boobs hadn't started growing yet and I didn't have any hair around my vagina. Me and Tom were still young and we didn't even kiss yes, as we still thought it was pretty gross. Well, I did. After me and Tom playing for a while, Ruby got bored and had a nap under a tree a few metres away from us. Tom started rubbing my neck, and eventually moved down to my chest. I looked at him sharply, 'Tom, what're you doing?' Tom looked back at me, right in my eyes.  'Trust me Lydia, you want this to happen.' I let him continue, and he started stroking my nipple. I got a shiver down my spine when he did this, and let out a soft moan. He looked at me again and I saw something in his eye I'd never seen before. He kept one hand rubbing my chest, then moved the other down towards my crotch. He started caressing the area about an inch above my slit, and I could feel my vagina go all funny. It was a weird feeling, but nice all the same. I was wearing a long t shirt, and nothing over my white lace panties except some thin white tights. The shirt covered my panties while I was standing up, but when I was lying down my shirt didn't cover much below my crotch. A small wet patch started to form on my tights, and I instinctively moved my hand over to Tom's jeans and started stroking where his willy was.  Tom soon was hard and I could feel his penis under his jeans. I started to slide down my tights, just leaving my panties and my bare, slightly tanned legs. With the hand that was caressing my nipples, he slid down his jeans and revealed he was wearing briefs still, and his prick looked about 3 1/2 inches long.  'Wait, Tom. If you're going to see my pee pee, I have to see your willy.' Tom agreed and took off his pants, showing me his erect penis who's foreskin hadn't stretched at all yet. I slowly slid down my panties, showing Tom my pee hole. He gasped when he saw it, and breathed  'Its... It's beautiful.' This made me blush, and another trickle of odd feeling fluid seeped out of my vagina. Tom rolled over, so he was on his side with his dick touching my bottom. He moved one hand up to my hip, and slid it into my slit. I gasped with pleasure, as an amazing feeling rushed up my entire body. He kept swirling his finger around my cunt, every so often hitting a spot where I felt unbelievable. Eventually I told Tom to keep his finger there, and it was the best thing I have ever felt. Soon, I moaned incredibly loudly and I shivered all over, as the greatest feeling washed over me. I could still feel Tom's hand in me, and it made me feel all the better. Soon I'd finished though, and my body returned to normal. I looked over at my boyfriend, and he looked at me back. We didn't waste a minute before we kissed passionately for about 5 minutes, and then just lay there, both naked from the hip down.  'Tom, that was amazing!' I gasped.  'Whats going on?' came a voice from my right.  'Oh god, Ruby!' I cried. 'What did you see?' 'Everything.' she said, and pulled her shorts down, showing her tiny red lace panties. A huge wet patch had formed, and she started rubbing her 10 year old cunt, hers even less developed than mine. She took off her small top too, and revealed her tiny flat chest. I felt it right to take off mine too, first pulling my t shirt over my head, then my tiny training bra, that barely did anything. Me and Ruby stared at each other, looking at each other's chests and pussies. We did this for about a minute, till Tom stepped in.  'Right, Lydia, lie on your back, and Ruby, you kneel above her head. Put your pee pee above her mouth.' We both did as he said. Now he stood on all fours on top of me, with his penis only a few centimetres away from my vagina. He put his head up to Ruby's completely undeveloped pussy, and licked her till she squirmed. She squealed with delight, and when I looked at him, frustrated, he plunged his dick right into my tiny slit. At first, It was incredibly painful, but the pain soon gave way to pleasure, as a feeling even better than the one I felt earlier coursed through my body, from my now erect nipples to my small toes. I started moving my body on rhythm with his thrusts, and I could feel the same feeling building that happened when I had my first orgasm. I started moaning loudly, and then I realised Ruby was doing the same. Soon, Ruby's cunny exploded beneath me, flooding both mine and Tom's mouth with her preteen cum. This set me off, as an orgasm even better than the first blasted through my violently shaking body. My pussy was throbbing madly, until I felt something else happen. Tom's dick bursted, with his practically clear cum flooding my sopping wet cunt. Ruby collapsed on top of me, and I started lapping up her sweet preteen juices. Tom soon collapsed too, his slowly shrinking dick still lying in my slowly pulsing pee pee. I could feel Ruby's cunt throbbing too, and I knew she'd fallen asleep, as had Tom. I decided to go along with the crowd, and let the feeling of my sister's pussy in my face and my preteen boyfriend's prick in my cunt help me drift off into a blissful sleep.