You can use the free copy scaling script from Ralf Sesseler (Dimension3D) to copy the scaling of a figure to a conformed clothing.

http://d3d.sesseler.de/index.php?software=poserpython&product=copy_scaling

But that will not copy the morphs into the clothing.

For that you can either use Wardrobe Wizard (included in P8)
or for older Poser versions you can get it from www.philc.net.

Alternative:

Morphing Clothes:
http://d3d.sesseler.de/index.php?software=posertool&product=morphing_clothes

I like last one because it is very fast (only seconds to copy the morphs into the clothing). The version of Wardrobe Wizard I am using (v2 stand alone) is much slower (but maybe it's me who uses it wrongly - I don't have P8 so I don't know about the speed of the included WW).
Morphing clothes also has a nice preset feature. You can easily make presets for different types of clothing (e.g. skirts and jackets) and define what morphs should be copies into what type of clothing.

But, if you made a character with a lot of morphs you maybe want to make an FBM. Here wardrobe wizard has a nice feature. You can let it make the FBM for you (it's a little bit complicated though, but PhilC has some manuals and instructions on his web site - and always kindly asks us users to READ IT (in our software company we do the same and call this "RTFM" = Read That Fucking Manual :-)

There is also a script from R. Sessler that is for creating FBMs:
http://d3d.sesseler.de/index.php?software=poserpython&product=spawn_fbm

I never used it, so I don't know how it works. But maybe you can also use it to create an FBM like WW does it.

So my way of working:

Figure -> Morphs -> Wardrobe Wizard to create a FBM
Clothing -> Morphing Clothes to copy the FBM and individual morphs into it
Scene -> load figure -> conform clothing -> script copy scaling

There is also another script I like to mention:

Add Deformers:
http://d3d.sesseler.de/index.php?software=poserpython&product=add_deformers
I am using it on V42 quite often because some clothings do not follow the "collars / arms up" or "chest bend back" etc. wery well. Using the script sometimes solves this. pjz99 told me in another thread, that this script is not meant for Victoria based figures but for SmithMicro ones. But anyway I am lucky it sometimes works for me (I don't really know how to use the Magnetize Cloting thing - maybe this is the way to go instead of using Add Deformers script.)