@Background Pony #77E7  
That is a good educated guess. Way better than mine.

@PMD  
It’s not about trying to guess.  
It’s about the fact that you didn’t even guess a number. The number in a bra size is just as important as the letter and makes all the difference. But you wouldn’t know that, would you?
 
Here’s a lesson from a girl, all right?  
A C cup can actually look pretty huge if it’s on a petite body, which would make for a small number paired with it.  
This girl, as we can tell from her other pictures, isn’t petite. She’s actually kinda tall but she’s a healthy weight, and her breasts don’t look small, so I’d say she’s somewhere between a 32 to a 36, in which case I’d guess at least a D, maybe DD.
 
Feel free to do some research on women before making a crude and uneducated comment like “SIze C boobs.”
 
And if you ARE a girl, then you may wanna get a professional bra fitting because you’re probably not wearing the right size yourself.

@Background Pony #6639  
Be my guest try to guess.

@PMD  
you know nothing about tits,  
stop pretending you do.

Modern style boombox.

I do love this cosplay so much. It really captures Vinyl’s personality!

SIze C boobs.