You have a PoserWorld sub, right? Steve made some nightgowns for the girls a while back. With a little luck (and Wardrobe Wizard) you should be able to convert them. Unless he has already done so himself... I have a vague feeling I've seen some

Otherwise.. if Dynamic is ok I could make you one in a moment

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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.