Do you mean something like this?

http://www.renderosity.com/mod/gallery/index.php?image_id=2484125&user_id=2482&np&np

If so, then just get lesbentley's pose to reveal the scale dials.  Make sure you have any conforming items set to follow scales in their Body Properties tab though.   This single axis scaling definitely works in P9, PP2012 and the newer versions too.   It might even work in P8 SR3 IIRC.

http://www.renderosity.com/mod/freestuff/?item_id=55538

You can change scales on any body part and most clothes will follow.   I do this regularly for a more toonish and even a more realistic look compared to default V4.