I need to make a character that has a really skinny waist... think retro pinup type shape.

I am lost as to what morph dials to turn to achieve this and can't seem to get the hour-glass look.  Here is an example of what I would like to do:

http://market.renderosity.com/mod/bcs/photos/prodimg4/product_image_full_48571.jpg

Whenever I try I end up with big hips that jut out too much at the tops of the hips.

Can someone please provide some suggestions as to settings?

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi