Dustin stepped out of the machine in a cloud of fog, stumbling in a pair of heels as he emerged into the living room a new woman.

“Wow, you look exactly like me.” said his Aunt Mandy, looking up and down her nephew’s totally changed body. “Even including my... large chest.”

Looking down at his heavy football-sized knockers, barely covered in his revealing red dress, Dustin sighed. “Don’t remind me...” he said, surprised by how high and sultry his voice now was. “I can even feel your... privates between my legs. You better be grateful I’m doing all this for you.”

“Of course! I just needed to test the body cloning device that your uncle left behind when he died so I could sell the technology. We’ll be rich!”

Dustin was already thinking of what he could do with the millions in shares he was now going to own a part of. Fast cars, expensive holidays... but that could wait until after he was changed back. “Alright, we know it works. Now let’s change me back-” he was interrupted when he felt his dress rip, and looking down he saw that his breasts were slowly growing. “Uhh, Aunt Mandy? S-something’s happening...”

Looking down at the screen, her eyes widened. “Oh dear... I thought the machine was done but looks like there’s still a few bugs. It’ll be okay, just give it a couple more minutes to cool down and you can jump back in.”

Feeling his dress torn to shreds Dustin cradled his still-expanding breasts, their heavy weight dragged him down as they grew to the size of basketballs, then ripe watermelons. Far exceeding conventional cup sizes and beyond, they were soon the biggest tits he’d ever seen. He was on the verge of tears. “Oh fuck! How much longer!?”

“Nearly there!” Aunt Mandy stated, pressing the button to open the door. “Okay... now!” Dustin stepped forward uneasily, losing his balance due to the weight on his chest and onto his chest. Unable to stand, his plump ass and worn pussy exposed as his pink glass-sized nipples rubbed against the cold floor (making him strangely horny), he dragged them towards the machine, knowing that this was his last chance. Reaching the door he went to stumble inside but it was impossible, his giant breasts each nearly as big as the rest of his body and too large to fit inside.

As the growth finally began grind to a halt Dustin uselessly wrapped his arms around his beanbag-sized boobs, unable to even reach his own nipples. Crying into his own cleavage he sobbed as he heard his aunt tell him that at this point it was not reversible. Now he was nothing but his aunt’s clone attached to a pair of impossibly huge knockers. And he definitely wouldn’t be making any money now.