From the seller:
Early 1900's Victorian or Edwardian Blue Chambrey Cotton Blouse
Lady's cotton chambrey day wear blouse from the early 1900's. Blouse has eleven vertical tucks from the neck line to the hem center front with the same along either side of the back opening. Many short tucks follow the round neck of the blouse. The long sleeves form a point at the cuff. Edged with a pretty flora machine lace trim. Hook & eye fasten the back. The blouse is in good condition. Possibly a bit of fading to the fabric from washings. A small amount of oxidation marks from storage. Measurements: 21" long from the neckline to the hem. 15" across from shoulder to shoulder. 34" around the bust..
This really looks like something you would easily see on a hanger in the store now, but it is Edwardian. Probably about 1905/1906.