Unless you request otherwise, I will back this with one piece of box cardboard (to help prevent the Post Office from bending it), wrap it in plastic wrap (to help protect the item from moisture or torn packaging), then send inside a manila envelope (or brown paper) when sent via First Class Mail with Delivery Confirmation
The styles ranged from having huge sleeves in the 1830s, to off-the-shoulder and with wide flounces in the 1840s, to very low-necked in the 1850s, to having low necklines and short sleeves in the 1860s, to long and lean with a bustle and very short sleeves in the 1870s, to sleeveless, low-necked, and worn with opera gloves in the 1880s, to having a squared decolletage, a wasp-waist cut, and skirts with long trains in the 1890s
You'd be hard pressed not to find a perfectly placed ruffle, or strip of lace, or floral applique that takes every piece to a level that's truly special
If shes not rocking the peek-a-boo heart detail, shes incorporating the shape in other ways