The S-bend of hourglass silhouette (1900).
Teens (1910 – 1919), Lily Absinthe
How Maternity Style Has Changed Over the Years
Fashion, Modernism, and Modernity (Part IV) - The Cambridge Global
1905-1909 Edwardian Corselette / Corselet Skirt Sewing Pattern
1650-1659 Fashion History Timeline
1855 Fashion History Timeline
Illustration from the Ladies Home Journal, October 1900
Vivienne Westwood Archives - University of Fashion Blog