1940s or 50s white tricot nightgown with a sweetheart lace bodice. Very figure flattering with v shaped seams in front and a v neckline in back. I didn't spot a tag but my guess is that it's a size 32. Tricot is stretchy and this should fit an xs to a smaller medium. Excellent condition.
Bust: 30" flat but fits a 32"-35" best
Waist: 25" unstretched
Hip: Free
Length: 55"