Wiktionary
first ladies
n. (first lady English)
Usage examples of "first ladies".
And now, too, that the first ladies of the court fill your drawing-rooms, why should you endure her importunate presence?
She spoke only to the Aussie first lady, practically ignoring all the other first ladies in the room, and acting as though Damali wasn't there, which forced Evelyn to work hard to continue drawing Damali into a conversation she didn't want to be in anyway.
Jack asked as they passed yet more portraits of Presidents and First Ladies, all staring at him .