This is a antique 30s/40s long silk and lace nightgown.  It is a really pretty piece.  It is off white color and it is silk.  She has a lace insert with silky pink ribbon to tie and adjust to your waist with a tiny pearl button.   It is in good condition, the only issue I see is the lace at the top is stretched and u will have to hem it, plz see pic 4 it will give u an idea,  I believe this was on a hanger for years. Their are no tags so measurements are BUST ( underarm to underarm)- 17" across or 34" round                                                                       WAIST-15 and a half " across or 31" round I would say she fits like a medium Vintage Lace Night Dress, Babydoll Nightgown, Silk And Lace, Vintage Floral Design, Lace Nightgown, Silk Camisole, Women's Nightgowns, Lace Insert, Nightgowns