It had been a week since Sweetie Belle’s breasts had gotten so large and Apple Bloom’s envy was steadily becoming harder to hide. The attention the young unicorn got from her classmates plus the endless bragging she did certainty didn’t help the earth pony’s feelings either.
 
“It’s soooooo good! They’re fun to play with, sensitive and nothing feels better than a full bosom of milk~ On a good day you can even feel them getting full!” Sweetie Belle would explain several times a day to which Apple Bloom would nod and smile. They were friends though, silencing any complains Apple Bloom had. But the yellow pony couldn’t help but start to research ‘A Bigger You’ for herself. Was there draw backs to it? Could she order some for herself? Apple Bloom had asked around and even managed to find a instruction manual with some warnings. This little booklet made the young apple nearly jump with joy.
 
‘Sometimes, depending upon the user, their milk may be used to make others grow. As such, it’s best to discard the milk away from farmland or other areas with ponies and cats.’ Hoping that Sweetie Belle was one of them, Apple Bloom hatched a plan.
 
That weekend Sweetie Belle invited Apple Bloom over for a movie night. Based upon the ‘breaks’ Sweetie Belle took during classes to relieve herself, Apple Bloom would be able to raid their fridge while the unicorn excused herself for milking. With any luck, Sweetie Belle would have some milk stored up there which Apple Bloom could drink! Worst case, she might even be able to find Rarity’s secret stash of pills if the milk didn’t work out. With everything in mind, the yellow earth pony knocked on the front door. Sweetie Belle opened it with a smile and the two made their preparations for the movie.
 
“I’ll be right back!” Sweetie Belle said once they had selected a movie and snacks, “Gotta get some of this milk out of me so we don’t pause in the middle of it!”
 
“Good luck, Ah’ll be down here!” Apple Bloom replied and watched her friend leave. She strained to hear the hoofsteps of her friend go up the stairs. Once she thought Sweetie Belle was well out of earshot, Apple Bloom hurried to the kitchen. She skid to a stop in front of the steel refrigerator then threw open the door. The orange eyes scanned the shelves and found a few bottles labelled ‘SB.’
 
“That’s gotta be it,” Apple Bloom whispered as she reached for the bottle. Her fingers twitched with anticipation as she popped the cork and poured herself a glass.
 
“Ah hope this works…” She muttered and chugged the drink in under five seconds. Her throat pulsed with each gulp then let out a refreshing sigh of satisfaction. Already, just as the first few drops hit her stomach, Apple Bloom’s breasts began to tingle. Her eyes widened with excitement and she lifted her green shirt to observe the effects for herself.
 
Sweetie Belle’s milk was one of the few that could make others grow! Already, before her, the impressive yellow melon sized breasts swelled outwards. Larger, larger, bigger and bigger by every passing second! Apple Bloom licked her lips and went for a second cup. The second dose of milk built up even more pressure within the yellow bosom. Within seconds her nipples began to ooze white with milk and a steady trickle poured from it.
 
“Ooooh~” Apple Bloom moaned and pressed a hand into the supple yellow flesh, making her leak milk even more. She then bit her lower lip, stifling another moan so that Sweetie Belle couldn’t hear her. Already her breasts were near her waist line, slowly shadowing her jean clad thighs. Soon Apple Bloom’s breasts began to slow in growth, mimicking Sweetie Belle’s current size. A pool of milk had formed around her own hooves and her nipples showed no signs of slowing down their leakage. However in her euphoria, Apple Bloom didn’t hear her friend coming back down the steps.
 
Sweetie Belle paused when she rounded the corner into the kitchen and gazed at her friend. The bottle on the counter made it clear what had transpired without her presence. Her white lips pursed into a frown and Sweetie Belle tightened her grip on the two full milk bottles in her hand.
 
“Well now…” Sweetie Belle made her presence clear. Even then it still took Apple Bloom a moment to realize she was no longer alone in the room. She turned around, still dribbling milk and sloshing a little over Sweetie Belle’s boots.
 
“Oh-uh, hey!” Apple Bloom grinned but the unimpressed Sweetie Belle just looked her friend up and down. They were roughly the same size now, though one of the two friends was in need of a milking.
 
“I can’t believe you didn’t tell me about this. All those looks you were shooting me was envy and stuff!? You know you could have just asked instead of going behind my back like that,” Sweetie Belle huffed. Apple Bloom chuckled a little knowing her friend was upset but not angry. This would pass with a little bit of time.
 
“At least you can say that you really make the good stuff!” Apple Bloom smiled motioning to the bottle on the counter before laughing sheepishly. Her plan had worked, though it had a small hitch.