First, make sure that the clothing is for the figure and any CHARACTER MORPH you may be using.

Second, check the Body and/or the collar groups to see if there are corrrection morphs for shoulders up, shldr up etc.

Third, if you have used a morph to give V3 larger nipples the clothing doesn;t appear to made to accomodate them.

V3 has Joint Controled morphs that raise the breasts when the shoulders are raised and vice versa. Some clothing have morphs that make this adjustment automatically, others have to have the correction made manually with a morph dial. 

Remember, unlike real clothing (or clothing used in the cltoh room) poser conforming clothing is more like plastic than cloth, so it's not really universal.

mike