@Liggliluff  
To be clear, I just converted the inches to the nearest cm for the comments on the bust size difference. You see numbers with bust-waist-hips on character sheets but unless you have a letter for cup size you’re sort of in the dark and have to make guesses on it. You only get cup size with the inclusion of a band size which charts like these don’t provide.

So based on observations and some extrapolations from other charts for comparison, I can come to a calculated guess as to cup sizes based on these body types.  
Yona: 36H (H-Cup) _{20cm difference to bust size}  
Silverstream: 36DD (E-Cup) _{12-14cm difference to bust size}  
Smolder: 30B (B-Cup) _{5cm difference to bust size}  
Ocellus: 32C (C-Cup) _{7-9cm difference to bust size}