How to determine breast size?

[Bridal Wish]

I've been toying with the idea of crossdressing for sometime now, my friend made a comment (since our group got on the subject of boobs) that if i was a girl (which is later..) I would have resonally big boobs..  but my question is how would i know how big i should go? and what method? i've heard of filling up balloons with water, birdseed in pantyhos... what is the most efficient way for achieving breasts?

[Jamie D]

This may not be exactly what you are looking for but just the same:

How to determine size for breast implant