I know what you mean about conforming clothing.  It's hard to fit the figure if you change their body shape, not to mention pretty impossible to fit the clothing around a figure that is posed in any way other than straight up standing.

You have a few options open to you.

1.  Dynamic Clothing (poser 5 and 6)

http://camelot.renderosity.com/freestuff.ez?Form.Contrib=mapps&Topsectionid=0

http://camelot.renderosity.com/freestuff.ez?Form.Contrib=svdl&Topsectionid=0

PhilC Dynamic Clothing Tutorial

• I absolutely love dynamic clothing.  Once I discovered it I was able to have my figure sit down, stand up, lay down, stick their legs out.... it was great.  I prefer dynamic clothing to conforming clothing.  Many merchants are seeing the increased trend and have started to make more and more of it.   The above links are from 2 generous Renderosity members who share their talent with us.  You can try your hand with dynamic clothing absolutely free.  If you decide you like it, there are other free dynamic clothing around, along with many gorgeous packages for sale in the various poser stores.

2. Magnets

• huge learning curve. Not impossible to learn and many swear by them.

3.  The tailor

http://www.daz3d.com/shop.php?op=itemdetails&item=3679

-  This program adds body morphs to clothing.  You still have to turn dials and make things fit, but it allows you to put "body parts" into clothing so you can adjust just those areas.

• It is an external program that you take the clothing into, add the morphs from a drop down list, save the clothing and then open poser and use the newly saved clothing item.

• I tried it and only had limited success with it. It didn't help me at all with problems of how to fit clothing to a figure that wasn't practically standing in a vertical position with  both legs straight beneath them.

4.  Wardrobe Wizard

http://www.philc.net/WardrobeWizard.htm

• this is my preferred method!  If you go to that link and scroll down you will see  a table that lists all of the figures that are supported by WW. That means that you can convert clothing to and from between any  of those characters.   Yes, even taking something meant for The Freak and making it fit the Millennium Baby, or vice versa!   You can also fit clothing to a morphed up figure; so no more dial turning to cover inflated boobs, hips or biceps.  And it's all done inside of Pose.  It may sound expensive for a "poser item", but it's a money saver. Your figures can actually share clothing, which is a huge money saver. 

"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