Hi,

My wife is trying to find a natural way to increase her breast size. 
Currently she has trouble finding lingerie that fits and it is very
frustrating for her.
She is a size A and would like to become a size B.

My questions are:

1. What are some safe natural breast enhancements? Which is best? 
2. Are there reviews on these?
3. Is this a realistic size increase through natural enhancements? Is
there a general timeframe?
4. What risks are associated with artificial enhancements?
5. What risks are associated with natural enhancements?

Please answer as many of the above questions as you can.

Any other information will be greatly appreciated by my wife and I.
All comments and suggestions/advice are welcomed and appreciated also.

Thank you for your time :-)

Exercises to increase the pectoral muscles could help a bit: 
push-ups, pressing her hands together with her arms extended in front
of her, similar exercises on fitness studio machines.

How about staying 'bra-less' around the house?  That should relieve
pressure and perhaps enhance shapes/sizes while she moves around (does
chores).
(THIS IS NOT SCIENTIFIC).