If you want to see what it's like to have larger breasts (post-op), try the rice test. This means buying a bra with larger cups than you currently wear, and getting some old stockings or hose that you don't mind cutting up. Get some dry rice, measure up an arbitrary amount (500-1000cc to start), pour the rice into one stocking (optionally cutting off the excess legging), make a knot (such that you can untie it, but which won't untie itself), put on the bra and stuff it into the one cup, moulding around your breast as appropriate. Repeat for the other side. Adjust for comfort and looks. If you feel you need more/less rice, remove the stocking from your bra and add/remove rice as you like. Don't forget to measure and take notes, so you know what size you like.

Alternatively you can try this with potato buds, although the lighter weight may not be indicative of what the weight of augmented breasts will be like.

For something completely different, try this with plastic bags and water. Note that this is potentially quite a bit messier if you don't seal the bags properly.  Yet another option would be to use plasticene (e.g., Play-Doh) -- you might want to wrap this material in cling film to prevent possibly staining your clothing.

For doing size conversions, go here: http://www.googleguide.com/calculator.html

Another option to doing the rice test (and one which might be more comfy if you decide to wear them for extended hours in public) is getting a pair of breast forms, as sold here: www.thebreastformstore.com

Related links:

• Rice (water) test (brief)
• Astrid's rice and water test
• Rice test (long)
• Video of woman demonstrating rice test effects
• Video of same woman, 2 months post-op, with 775cc saline implants