Brenda by K. Malone Little Sister isn't so little anymore First day home from school and it felt unbelievebly good to be in the house I grew up in again. I had only been away from home for a year but it felt like ages, especially since my only visit was during Christmas break and only for a few days due to my busy work scheduel at the restaurant I worked at near school. I actually got home the night before and a had a good visit with both my parents. My older sister was not coming home from college for the summer since she had arrangements to live with friends in another town working at beach resort and my younger sister, Brenda, was out for the night with friends. I had an early night last night to catch up on sleep that I had greatly needed. I must have really needed it because I didn't get up until noon. It was Saturday morning and I walked down to the kitchen to find a note from my parents saying that they had gone out of town for the night to visit some friends at their cottage. Good thing I came home last night so that I could at least see them for a bit. I lounged around for about half an hour and watched TV and ate a bowl of cereal. Before long it was getting close to 1pm and I figured I had better do something productive with my day. I had always had a great desire to re-arrange the furniture in my bedroom so that I had a little more space in what was currently a pretty confined area. I tried to move the bed and my dresser on wheels in a couple of different places but my room was simply too small, and I quickly decided that the main problem was the old cabinet that had been in left in the room when we first moved in 10 years ago. I had always been used to having it in my bedroom but I really had no need for it in my bedroom aside from storing some of my belonings, mostly my vinyl collection. The thing was huge and it took up most of my room. I didn't really need it anyway since the only record player in the house was downstairs anyway. The friggin' thing was 5 feet long , 2 feet wide and 3 feet tall. This thing had to go. I didn't bother trying to take all my records out because I thought it would consume too much of my time so I tried to puch it around, thinking I could slide it along the carpeted floor and carefully cown the carpeted steps (2 floors !) to the basement which was always a little hang out room when I was in highschool. I got behind it and started to push but it wasn't going too far. It took a lot of effort to move it a few inches. I though ti would be best if I got some help to get the job done. I had remembered seeing Brenda laying on a beach towel in the back yard from the livingroom where I was watching TV earlier. I decided not to bother her earlier because all I could see when I looked out the window was the top of her head and to big breasts that rested upon her chest. They were so big that I couldn't see any other part of her from the angle I was looking from. I didn't want to say hi yet because it made me uncomfortable to see my sister that way and because I was taken back by how big her breasts were. I never noticed them before (because I don't look at my sister that way), maybe she had grown in a few places since I had seen her last.She was staying with family that we have in Florida this past Christmas so it had been almost a year since I had last saw her. I called her from by bedroom window and asked her kindly to throw on some clothes and help her dear brother move some furniture out of his room. I then continued in my futile pursuit to move the cabinet by myself. Before long Brenda had entered in a gray track suit that covered the bikini she was wearing before and before she said hi she was pulling at the other end of the cabinet. It started to move quickly and easily...then she said hi. We made some small talk and started to catch up as we moved the cabinet down the hall. I told her how school was and as we were about to start talking about what she had been up to we reached the first flight of stairs. Brenda was at the end closest to the stairs so she would be going down first. She said we were going to have to lift it down the stairs. Before I could even offer to switch Brenda spots she lifted up her end and sternly told me to do the same. The thing weighed a ton. It must have been at least 350 lbs. We made it down the short flight of stairs okay but I needed a second to breath before we went down the second. I was already sweating, Brenda on the other hand was dry and comfortable, not even short of breath or slightly tired. She was ready to keep going before I stopped and was already down a couple stiars waiting for me to get back into it with her. I gathered up my strength and went back to work. The break I took was obviously not long enough. She had reached the floor of the basement but I lost my grip and tripped forward from the top of the atairs. I fell forward and started to slide down the top of the cabinet until it quickly straightened itself. I was lying on top of it, confused and scared. My first thought was that I had crushed my little 16 year old sister. Then I noticed that the cabinet I was lying on top was swaying and several feet of the ground as I heared the sound of tearing fabric. I peaked over the edge of the cabinet to my shock and amazment to see Brenda supporting the weight of the cabinet and myself, more than 500 lbs, with her arms completely extended over her head. Her sweat suit and been torn into tathers drapped over or falling of her explosive muscles. "Are you okay?" I yelled out, completely confused. "I could do this all day, I'm just glad you're okay" she said as she began to do reps with the cabinet and me on top of it. She walked over to a clear spot in the basement and set down the cabinet and then picked me up and set me on my feet. I was standing face to face with my little sister, only she wasn't little anymore! She had grown to be 6 feet tall, about 7 inches taller than I last saw her a year ago. She was now an 2 inches taller than me, her senior by 3 years. I couln't believe it. Then I took in the sight of the rest of her body. I didn't notice her body while we were moving the cabinet because she was wearing a sweatsuit and because I was fosued on moving the damn piece of furniture.Now the sweatsuit was only a memory and what stood before me was the most unbelieveble sight in my life. Brenda's shoulders were at least 50% broader than mine her traps were just massive. Her pecks were two solid slabs of muscle with the most amazing breast I have ever seen in my life sitting on top of them, just bearly being contained by her black bikini top. Her arms were just two massive mounds of muscle drapped along her sides. Her stomach was covered with perfectly cut abs...she had a friggin' eight pack! Eight !?! Her legs were enormous. Her thighs were swelling with muscle and her calfs were as big as my thighs. "Brenda....." I could barely speak. I was terrified and aroused by my baby sister. She was more muscular than I could ever dream of being. "...you're massive. You're the most incredible thing I have ever seen. How did you get so big and strong and so....big?". I sounded like a complete moron and I couldn't belive how small I felt. "Well, why you were gone at school I put this room to use when I bought all this exercise equipment at the stock auctions right after you left..." I was too stunned by my sister's physique to notice the incredible home gym my sister had established in the basement. The back wall was all mirrors and I looked into I could see Brenda's massive back. It blocked my body completely out of view. I looked like a small child next to her, my baby sister. "I got into lifting and working out to help my rugby playing, swimming, soccer and tai kwan do and before long I just became so in love with the way I felt and how much I was growing that I dropped all my other sports to focus on my weight trainning. I still do the other stuff from time to time recreationaly, but this is what I love. And the more muscular I became, the more my body grew. I weigh 250 lbs and I'm 6 feet tall and still growing. There is no explanation for it so I just go along with it. I'll have to stop growing sometime, but until then..." Brenda then went into a doulbe bicep pose. "Can you measure these for me?" She said softly in a sweat little girl voice as she handed me the measuring tape. My trembleing hands opened to receive the tape unti she stopped. "Wait. Let's measure yours." She put down the tape on the cabinet and lifted my t-shirt off of me and then proceeded to drape me over her shoulder to take off my pants, socks and shoes. She set me down on my feet again so that we were once again face to face. Her standing majestically in her black bikini and me in my little blue boxer briefs. She looked me up and down and then took note of my erection. She started to laugh. "Oh sweety, you've got a little chubby for your little sister. And look at you. You are so slim." Her arms looked as wide as my body. She was always athletic when we were growing up and I was always the slim, unactive music lover, but at least I was taller than her. Not anymore. She looked like she could take on an army of me. " Show me a bicep, big brother". I flexed my stronger arm, my right, as hard as I could and Brenda wrapped the measuring tape around. " 14 inches. Let's see how big your little baby sister is, shall we?" She handed me the tape and she began to pump her arm. I started to put the tape around but Brenda continued to pump her bicep. "22 inches!....23"........24"...." Brenda pumped harder " my mouth went dry and I could barely utter out the final measurement "26 inches. My god Brenda. You're biceps are 26" big! That's amazing!" Brenda smiled and brought both my hands to feel her massive biceps. "You should see how strong I've gotten big brother". And with that she lifted me at my hips and raised me over her head. "Grab the bar" she said, refering to a bar across the ceiling, ten feet above the ground. "Show me how many chin ups you can do , big brother and then I'll show you how many I can do." I managed to do 4 chins ups and tried to get up to do the fifth but couldn't bring my 150 lbs body up any more. " You are so cute!" she replied and then jumped up and grabbed the bar too, her hands outside mine and her face in front of mine. She the nplanted a gentle kiss on my cheek. My erection was not able to get anymore erect than it was. I don't think I'd ever been so erect in my life. My underwear was stretched to its limits as my soft, slim body brushed up against her massive physique. She felt like steel covered with a few layers of skin. "Okay, let's see if I can beat your big 4 chin ups, big brother". She then let go of the bar with her right hand tickled my balls with her finger. I was caught of guard and let go of the bar. Brenda's lightnig reflexes cought me by the elastic of the front of my underwear while grabed hold of the bicep of the arm holding me up. Brenda then began to do one handed chin ups with astonishing ease and doing curls with the hand that prevented me from falling to the basement floor. She was lifting her own 250 lbs mass with her weaker left arm while curling my 150 lbs with the other. She showed no sign of fatigue but continued to pump up and down. I had a complete wedgey but could think of nothing more than the massive bicep I held with my two hands and the rock hard solid and now sweaty body of my once little sister, now a power house of unimaginalbe feats. This began to be more than I can take and I began to have an orgasm as my sister pumped my body like I was nothing. As I came she pulled herself up faster and when I was done I almost blacked out. Brenda jumped down to the floor holding me in her arms like a little baby. Her muscles were so pumped that her bikini top broke off while she was curling me and doing chin ups. She ripped my underwear off as she could see it was giving me great disfomfort. I layed naked in her arms barely conscious looking up at my baby sister. " Do you like my new muscles ?" she asked cutely with a smile. I nodded my head slowly. "Good, because I'm going to keep getting bigger, and maybe you can help me with my training. One of the main reasons I wanted to get big muscles was to protect you. When we were in school together you used to get picked on and i always wanted to be able to help, but I was too small. Now no harm will ever come to my big brother ever again." She walked me up to my room, my naked body craddled in her massive muscles and her bear breasts.