Ok JCO here's an idea.
On inflate123's site there was an avi of a nice rack in a checked dress. as the avi progressed and the breathing effect (achived by morphing) progressed the breasts grew.
Here is my penniesworth of idea.
1. do an avi (good res, divX of course) from that sort of angle as the avi.
2. get a bra from somewhere and a shirt and this is the technically important bit.
the shirt must be smaller for a tight fit, and must be done up to just the top of the bra showing some cleaveage.
Then with the bra (thin lace), get a thread pic or a knife and cut every other thread down the center of the bra between the cups to weaken it (see where i'm going with this one?)
End result (with any luck) shirt pops open, bra "erupts" (damn what a kinky word) intact like a pair of iceburgs from the shirt and then begins to split down the middle until the breasts end their toutured fight and explode from the bra.
3. Lets, have good sound on this for the fabric going stich by stich, avoid poor lighting and backgrounds such as white as in the prototype expansion mpg (boobpop.mpg)because this made it very hard to discern if anything was actually happening. Do it nice and slow, no point rushing a good thing. and all will be just SO FIIINE. 
Bet no-one can guess I'm a Dr Enlarge fan in a big way love his (or her I don't know which it is) style faves were swellgal and tytnosis (apart from the preggers bit, not my thing)and I wish the doc would do some more like those.
[ October 20, 2001: Message edited by: invisible pervert ]