RWBY Shrunk/Transformed

"Wee!" You yell, diving straight into Yang's cabinet. Merging with the first thing you land on, you become... A bright yellow bra able to hold pumpkins (Obviously an exageration. Pumpkins are way to small a comparison to Yang Xiao Long's hefty bust)
Thinking that she saw movement with her cat-like vision, she stalks over to your hiding spot at peers inside. Finding nothing but bras and undergarmets, the cat fanaus initially leaves, before heading back to look at her partners bras.
Quickly groping herself over her shirt for comparison, Blake pulls you out and holds you to her chest. Unfortunately, for Blake, she sees just how much of a difference her and Yang gave 'up there.'
"Yang, god damn. I used to have big boobs, guys would always stare at my chest." Blake cupped her admittedly large breasts in her hands, looking down at them. But then Miss. Xiao Long just comes along and out-does me? It's not fair! Look at this, that's ridiculous! No lady has boobs that big naturally." Grumbling off, Blake left the room.
You were just about to leave, too, when suddenly none other than Yang Xiao Long walts in, sweating and patting herself dry.
"Man, what a workout! My sports bra is soaked!" Reaching behind her, she unbuckles her sports bra and pulls it out of her shirt. Closing the door, she swings her hips as she walls towards your hiding place. Tearing off her wet tanktop, she breaths a heavy sigh, causing her massive breasts to heave and slightly bounce. You stare at the glistening, bare breasts above you as...