Try this:-

Load the clothing.
Select the clothing BODY
Go to the Poser Edit menu and select Copy.
Conform the clothing to the figure. (Poser 7 resets all the clothing morph dials to zero which is not helpful, previous versions did not.)
Reselect the clothing BODY.
Go to the Poser Edit menu and select Paste.

Your original settings will be then reapplied to the clothing.

Hope that helps.