[darththeo]

Real Life Depends on the girl:

Large B/Small C looks good on most small frame girls.
However, the larger frame, the bigger the boobs need to be otherwise she doesn't look right.
Girls with a large frame and heavy set with small boobs ... I have seen them, just look wrong.
And small frame girls with large breasts look like they are easy to push over.

Fiction:
There is no limit ... duh!