I'm not sure how much experience you have buuuttt..  First... what version?  What Daz, what Clothes?  What Morphs?

 

Make sure you're figure is selected before fiting the clothes.  (Fit to on the clothes, and select Victoria.)

If you're dealing with V4, you might want to make sure that the clothes actually support the morphs you're dialing.  V4 Morphs+++, Elite, Stephanie, etc.

If you are using third party moprhs with upit V4 they are totally unsupported.  (Had an SOB last night with GND4.  Heavy poses like sitting tent crumple the joints to crap.)

Not all clothes seem to cross talk correctly.  So, make sure the dialed morphs on the character are dialed on the clothes.

 

Even after that fits for clothing can go off with a pose adjustment.