"Ugh, not again! This is the third time this month," Sara exclaimed, feeling both flustered and a bit embarrassed. "I swear, my growth spurts are always at the most inconvenient times."
Grace giggled, "Well, you're definitely going to give the guys and some girls quite the show if those keep growing."
Sara blushed, adjusting her shirt to make sure she was decent. "Shut up, Grace. But seriously, why the sudden growth? It's not like I changed my diet or anything."
Little did Sara know that her brother's meddling was the cause of the sudden transformation. From your perspective, inside the confines of the bra, you felt a mix of guilt, fascination, and confusion. It was a completely novel experience, feeling every movement and sensation through a completely new lens. The sensitivity was heightened, and every touch or brush against the fabric was intensified.
Your thoughts were interrupted by the ringing of the school bell, signaling the start of another school day. Sara quickly adjusted herself once more and the two girls headed into the school building.
Throughout the day, the sensation of being a pair of breasts was a mix of pleasure and discomfort. You constantly felt the constriction of the bra, the warm sensation of Sara's skin, and the countless eyes that would occasionally glance at her (and by extension, you).
During lunch, Sara and Grace sat at their usual spot, chatting about school gossip and weekend plans. Sara felt a strange sensation, and she looked down to see a small wet spot forming on her shirt.
"Oh my god, what the...?" she whispered, feeling panic rise. She quickly pulled her cardigan around her, hoping no one would notice.
Grace leaned in, "Is that... milk?"
"I... I think so," Sara murmured, her face turning bright red.
"We definitely need to hit the mall after school," Grace said, trying to lighten the mood.
By the end of the school day, you had grown accustomed to your new environment, sensing Sara's emotions and physical state as if they were your own. The day was filled with a mix of embarrassment, curiosity, and a fair amount of discomfort.
Finally, after school, Sara and Grace headed to the mall. The shopping experience was a unique one, as you felt the hands of the sales associates measuring and fitting Sara for her new size. The sensation of being taken out of the old, constricting bra and being placed into new ones was almost a relief. The cool fabric, the various styles, and the experimentation were all felt tenfold.
After purchasing a few new bras, Sara sighed with relief. "Finally, bras that fit."
Grace chuckled, "Let's just hope they fit for more than a week."
As days passed, the sensation became more and more normal. Sara got used to the sudden growth and the occasional lactation, attributing it to some hormonal changes or perhaps a late growth spurt.