bust stretchable till 50 max so I would suggest 48 inches bust can wear this easily.
waist 54 inches last stretch
I'm bust n waist 44 n it looks good for me neither tight nor lose but comfortable. one of my favourites.
I have put in good condition because u can check video. no default as such just that it is starting to make lint small balls.
for material check the tag
Size: Bust 48inStretchable by 1in