The designer says they are real pearls (again, misuse of the word "natural," but we get his meaning):
Lupita Nyong’o graced the Oscars red carpet on Sunday night in a custom Calvin Klein gown handmade by Francisco Costa.
"The design of the dress was initially inspired by iconic images by Horst and Cecil Beaton," Costa told the News on Sunday. "Lupita looked stunning tonight and the dress perfectly flattered her figure and personality and well represented the house of Calvin Klein."
The stark white creation was made with no less than 6,000 white pearls, combined with metallic tulle and silk lame.
"Working closely with Lupita over the past few months," said Costa, "we decided to use natural pearls to create a truly modern, timeless dress that compliments her style and echoes the aesthetic of Calvin Klein Collection."