Women in summer dresses, 1910s. From Ladies' Home Journal, July 1910. "5332 One of the new Russian blouses is shown on the right. 5327 Afternoon dress of white dimity with a pink dot, worn with a Chanticleer frill of sheer white batiste. 5333 The unbroken shoulderline is shown in the afternoon dress on the left. 5323 Tub suits of linen are the most useful sort of clothes for general wear. 5329 Dress above for the evening or a garden party."
Gay 90s 2 These ladies are most likely wearing corsets with bust bodice as their undergarments. It looks like they are wearing an afternoon dress. Their corset now has an "S" shape to it . The sleeves of the dress have slimmed down as well. These women look sophisticated as if they are going out somewhere.
Here is an illustration of two ladies in afternoon frocks from a 1910 issue of The Lady’s Magazine. Note the extra wide hat crowns, made especially to accommodate the “Gibson Girl” hairstyles of the period.