Underskirt (noun)

A skirt worn under another skirt or dress to add fullness or to protect the outer garment.

Origin:

Early 19th century, from under + skirt.

Examples:

1. The underskirt added volume to her wedding dress.
2. The underskirt prevented her dress from becoming dirty or stained.
3. The underskirt was made of lightweight cotton for comfort.
4. The underskirt had multiple layers of tulle for a more dramatic effect.
5. The underskirt was detachable, allowing her to change the look of her dress easily.