Vintage slip nightgown and robe dressing gown set SZ S

Great vintage condition except for a hole towards bottom of skirt and a few snags as seen in pictures. Tie belt is held by tulle starting to fail. Very delicate. Size says 34 although this is a vintage piece. Please confirm measurements as Poshmark does not accept returns for fit issues. Looks to be XS or S. Please see all fifteen pictures and one video. Thank you for looking.