Antique lace bonnet or night cap.
ivory color with pink silk ribbon
inside dimension 24"
antique needle lace - possibly point de gaze - Belgian?
likely dates from the late 1800's to early 1900's
This could have been remade because the hook and eye are newer.
(not an expert here so use your own judgement) Look closely at my photos.
What you see is what you get.
Lovely estate find!