There is no substitute for synthetic whalebone : r/corsetry

Victorian Corset 1860 Cotton Overbust With Busk and Synthetic Whalebone 19th Century Undergarments for Reenanctment - Canada

Leather Underbust Corset in Black Leather Corset Belt Waist Cincher Leather Harness Real Leather Renaissance Faire Corset Gothic Vampire - Canada

Patterns for all day comfort and sitting/bending over, advice to support large breasts : r/corsetry

Using Synthetic Whalebone in Redthreaded's Georgian Stays Pattern

A 19th-Century Whalebone Corset

17th century – Page 4 – Sarah A. Bendall

Renaissance Corset Bodice in Moss Green Embroidered Floral Cottage Core Stays Fairy Elf Hobbit Cosplay Elizabethan Overbust Corset Top - Canada

Whalebone and its Substitutes

Can fat women wear corsets? Did they in the Victorian period? - Quora