This page has much more helpful information. Dated May, 1901 it's out of McCall's Magazine and shows in color; McCall 6527 Misses' Guimpe Dress, McCall 6538 Ladies' Eton Jacket and McCall 6540 Ladies' Skirt. In gray tones; McCall 6562 Ladies' Shirt Waist, McCall 6532 Ladies' Skirt, McCall 6559 Misses' Jacket, McCall 6553 Misses' Skirt.
Take note of the way pleats and lace are used on the skirts, and the variety of collars. And while you are considering the serious underwear these women had to have on to get that silhouette, don't forget about how straight you'd have to stand to hold up those hats!