"You are still dry, you don't need to be changed yet," said Tiffany with a smile. She patted Katie on her diapered crotch and pulled up
her pants with a smile.
Katie was shocked at the sudden change in her best friend's behavior. "What do you mean 'not yet?' I don't even wear diapers!"
Tiffany giggled, and for some reason her eyes seemed to flash. Maybe it was just a trick of the light? "Katie, you're so cute when you
pretend. You remind me of my baby cousin - you both can't control yourselves no matter how much you say you can!"
There it was again. Tiffany's eyes flashed, and she smiled even wider. Katie was getting worried. "Are you ok, Tiffany? Ever since my
underwear changed you've been acting different..."
Tiffany laughed again. "Silly Katie, you know I've been taking care of you like this forever! You didn't get potty trained like me, so I
change you when you mess yourself. Don't be embarrassed - I think you're cute in diapers!"
Katie, now getting scared, went over to Tiffany and wrapped her arms around her. "Tiff, I don't know what's going on with you, but it
needs to stop, ok? You're really starting to freak me out!" Katie squeezed her best friend in a worried hug, her diaper crinkling
uncomfortably against her jeans. Tiffany's eyes flashed, and she jumped, wriggling out of Katie's grip. "Ow! Katie, could you not do
that so hard?"
"Sorry!" Katie said, stepping back and raising her hands apologetically. I didn't mean to-" She stopped, confused. Something was
different about Tiffany. It wasn't clear at first, but when Tiffany lifted her shirt and adjusted her bra right in front of her, it became all
too obvious. To Katie's shock, Tiffany's breasts had grown from their modest B-cup size to large C-cups, stretching her bra to the
breaking point and spilling out over the tops.
"Ugh, this is useless. Mind if I just ditch this old bra? I don't even know why I'm wearing it," Tiffany sighed. Before Katie could say
another word, Tiffany's eyes flashed again, and she unhooked her now too small bra and let it fall. Katie's mouth fell open in
astonishment. Tiffany's breasts were bigger, and still growing slightly - Katie watched as they swelled through the C-cup range and
finally stopped at a large C. They weren't as perky now, hanging lower on her chest than normal.
"Tiff," Katie began, "your boobs-" Tiff cut her off. "Don't worry about it, Katie - they're just really sensitive today. I knew I shouldn't
have left my pump at home." Tiffany's eyes flashed, and Katie saw with horror that her friend's breasts were changing yet again.
They changed shape, becoming not much larger but much fuller, filling out from large teardrop shapes into a rounder shape. Her
nipples were different, too - once comically small and rosy on her huge frame, they were swelling and darkening. Her areolas
widened by at least an inch, thickening and darkening to a deep brown color, and the area around them reddened as if with a buildup
of pressure. Tiffany had the milk-filled breasts of a well-developed pregnant woman, or someone who had recently given birth,
sticking out , upturned, sagging maternally and with no stretch marks whatsoever.
"Wow, my boobs really hurt all of a sudden. I'm so glad you're here, teen babies are one in a million." Her eyes flashed one more
time as she met Katie's eyes.
What was going on? One minute Katie had suddenly found herself in diapers, and the next her best friend had turned into some kind
of teen mom! She looked at Tiff, scared and confused, and the flash in her friend's eyes reflected in her own. Her brain reeled, her
whole head tingling as memories of her lifelong incontinence rushed in. Lucky she had grown up next to Tiffany, who had always
wanted to be a mommy and had entered puberty at age 10...Katie's boobs stayed small, she wouldn't get her period until at least
17...Tiff had gotten boobs and a period at 11, started giving milk at 13...
It made sense, Katie knew, taking Tiffany's hand and walking over to a nearby sofa. She was a lifelong baby, Tiff was destined to be a
mother. How lucky that they had been inseparable all their lives...
They sat down, Katie lying on the couch, her head on Tiff's lap. Tiff held diapered, immature Katie in her arms, bringing her friend's
head to her breast. Katie opened her mouth and latched onto a nipple, sucking to get at her favorite milk. Tiffany was filled with a
maternal warmth as she stroked Katie's hair, rocking her slightly as she breastfed her best friend.