I've just started a line of high quality clothes known as BB (Bouncing Bosom) Outfits.
BB Outfits are equipped with sculpty animated breasts. BB sculpty breasts are scripted to move and bounce when your avatar moves, eg. Walk, Run, Turn, Jump, Fly, etc.
Two breast animations come with the package - Bounce, and Jiggle. All parts of your outfit can be modified.
BB breasts are resizable and can be as small as size 50 or can be stretched as large as you wish.
Bouncing Bosom Video:
http://smashingprims.com
BB dress images:
http://smashingprims.com/BBdresses.html
Store location:
http://slurl.com/secondlife/sinfro/252/185/109/?x=692&y=519&img=http%3A//www.smashingprims.com/images/slurlimage.jpg&title=Smashing%20Prims%20&msg=Welcome%20to%20Smashing%20Prims%20Second%20Life%20store