MM18104 - 1800-1830 Regency Pantalets Pattern. Petite, Small, Medium, Large, and X-Large. 1800-1830 Pantalettes, are the most important undergarments for a woman of the Regency. They do not have a closed crotch seam, which is historically correct for this period. They are a drawers-type garment witha ribbon fastening. Ideas for variations are included. Great for Jane Austen, Pride and Prejudice, Sense and Sensibility, Wuthering Heights Era fashion.