So I bought a mastectomy prosthesis so I can cosplay big tid.. (OnlyFans)

So I bought a mastectomy prosthesis so I can cosplay big tiddy anime waifus and HAHAHHA ITS SO INSANE I CANT STOP LAUGHING
It looks relatively normal in this shot but oh my god they are MASSIVE.
The site advertised them as a D cup but they are definitely more like a DD or E cup, especially since I have to put it on top of my existing boobs. 
I’m debating on whether or not I should exchange it for one cup smaller or if I should just keep it?
It honestly might be too large 😂😂