It's ivory watered silk with lots of lace and seed pearls.
A wonderful midcentury example is a day dress (1853-56) of ivory silk printed in a colored floral pattern.
The dress was made from ivory silk, organza and chantilly lace.
Under the dead-black uniform, the man was wearing ivory silk French knickers.
Powder-blue voile over a little slip of ivory silk.
Peabody pushed her way through a sea of ivory silk.
The material used was ivory silk and a diamond fringe tiara secured her veil.
Yards of ivory silk were sparkling with tiny seed pearls.
It was her own, a long, flowing swirl of ivory silk.
I gripped my knees, a double handful of ivory silk twisted in my fingers.