And yes, Hauksdottir, I noticed that poke-thu too :o) But as it wasn't the subject for the question... Anyway, you must use the same morphs on the dress as you used on the character. Unfortunately this is the downside of Poser 5's elimination of cross talk - Morphing clothes no longer automatically morphs with the character.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.