(Original story posted August 21st 2023) This story has been Updated!
âHoly crap! Your tits are even bigger than before!â Matty exclaimed as he reached out and grabbed one of Sarahâs huge new pecs. He couldnât help giving it a firm squeeze. He adored how soft the muscle felt while knowing damn well those pecs could become hard as rock with a single flex.
âThey mustâve given me one of the menâs shirts by mistake.â Sarah huffed, looking down at her new muscle bound body. Her gay best friend was obviously enthralled by her strong masculine form. âIâm surprised my leggings havenât ripped yet with how big my thighs areâŚâ She added, glancing down at the tight fabric that now strained across her muscular legs. Not to mention how they struggled to contain her hefty new bulge.
Sarah had been going to BetterGym for just over a month now. It was an expensive place but well worth the money because when you arrive they give you what they like to call a âBetterShirtâ that shifts your body into whatever shape youâre striving for. They have multiple fits for both men and women. Menâs bodybuilder, Menâs toned, Womenâs lean, Womenâs powerlifter and so many more! For example men that wore the menâs bodybuilder shirt would immediately hulk out into giant muscle beasts. Itâs said that working out while using these body morphing shirts can help train your body to remember that physique and grow into it naturally at a much quicker pace when youâre not wearing the shirt. Until finally you donât even need the shirts to look like that anymore! So many men and women had used these gym shirts to reach their dream bodies many times faster than they wouldâve normally. Seeing results that would usually take years becoming attainable in only a few months of consistency.
Today Sarah decided to bring one of her best friends Matty with her as a guest. Unfortunately he couldnât get a shirt without being a full member but he still got to see what it was all about as Sarah asked for her usual Womenâs Aesthetic shirt. The staff who provided BetterShirtâs quickly grabbed one and presented it to the young women who gave a swift thank you before heading into a changing stall. Little did Sarah realise, she probably shouldâve checked the tag on the shirt before slipping it onâŚ
Usually what would happen is her body would become slimmer in some places and curvier in others to give her that perfectly balanced female form. But this time something was different. Instead of her body simply reshaping itself, it began growing from every angle! Arms and legs bulging with thick muscle as her height shot up rapidly. âWhat the fuuuck⌠is happeninnggggghhhâŚâ She groaned in a voice that got noticeably deeper with every grunt. Her back and shoulders widened. Her breasts flattened only to make way for a pair of giant pecs that grew in their place moments later. Even her ass lost its feminine shape in favour of a tighter looking but still rather thick man butt. Her voice really dropped a couple octaves however when a hug pair of testicles formed between her legs followed by a fat juicy cock that replaced her former genitalia. Her entire body continued to pulse and grow as her face changed, losing its soft gentle features in return for rugged manly ones accompanied by some stubble and a shorter haircut.
Moments later a total hunk burst out of the stall, giving Matty quite the scare at first until Sarah explained what happened. She poked and prodded at her masculine body awkwardly for a moment, trying to wrap her head around what the hell just happened. Squeezing her biceps, exploring her new shape, grabbing her own muscle ass a little. So much so that it encouraged Matty to reach out and do the same. How could he resist grabbing pecs as massive and juicy as those given the chance.
âYep. The tag says Menâs Aesthetic. Not Womenâsâ Matty confirmed once Sarah asked him to check the collar for the shirt tag.
âShit. Well I better go and swap this for the right one.â Sarah groaned in annoyance.
Just as the newly formed hunk was about to make his way back to the BetterShirt staff, Matty stopped her for a moment. âHold on! Whatâs the rush? You look hot as fuck right now. You canât tell me youâve never wondered what itâd be like to be a guy. All big and strong with a deep voice and powerful muscles.â He wiggled his eyebrows a little. âCome on. Just one gym session wonât hurt right? Think of all the heavy ass weights youâll be able to lift now.â
Sarah glanced over at a wall mirror nearby and saw the man sheâd become. An aesthetic male version of herself with broad shoulders, big pecs and a skinny waist. She had to admit Matty was right. She did look good. A little meathead-ish perhaps but still sexy nonetheless. And though sheâd wouldnât admit it out loud, the man sheâd become was absolutely the type of man she wouldâve envisioned when fingering herself. Just the thought of that made her new male anatomy start to chub up a little. The sensation of which was pretty bizarre.
âFine. One session. But after that itâs back to the Womenâs Aesthetic.â She claimed. Little did she know how deeply in love sheâd fall for her manly new body over the next couple hours. Relishing in the explosive power her enormous muscles contained. Finding herself subtly groping her bulge when she thought nobody was looking until she had to excuse herself to the menâs bathroom so she could get a proper look at her new cock. It wasnât long then until she realised how addicting the feeling of having a dick truly was. Especially after nutting for the first time before walking back out into the gym like nothing had happened. Though Matty had his suspicions judging by how long Sarah had spent back there.
Unfortunately shirts had to be returned at the end of every session. After sheâd taken off the shirt and reverted back to normal she found herself feeling an intense wave of disappointment that she hadnât expected to feel. A wave so intense that she couldnât stop thinking about being a man and having a cock between her legs for the rest of the day. Needless to say Sarah was back at BetterGym the very next day and this time she actually requested a Menâs Aesthetic shirt! It was too intoxicating to resist. Before long it became one of the only BetterShirts she wore.
Itâd been over a month now since that initial mix up and she was still wearing the menâs shirts. Still turning into a hunky man almost every day. Still sneaking off to the bathroom to jerk off her thick temporary cock between workouts. And now sheâd started hoping that one day, if she continued to wear the menâs shirts for long enough, that one day she wouldnât revert back. That eventually sheâd be able to walk out of that gym a man⌠forever.