[2] After earning her PhD, Weber joined the faculty at the University of Pennsylvania as an assistant professor of Romance languages.
[6] While there, her book Queen of Fashion: What Marie-Antoinette Wore to the French Revolution was published in 2007 and described Antoinette's life starting from her arrival from Austria into France.
"[10] Greffulhe's husband had ordered her to not publish the essay for its vulgar contents, which she agreed to in fear of being beaten.
[9] Weber used these essays to trace the lives of three high-society female models for the Duchesse de Guermantes, from childhood to adulthood, in In Search of Lost Time, Proust's novel in seven volumes.
[11] Upon publishing the book, Weber was named a finalist for the 2019 Pulitzer Prize for Biography or Autobiography[12] and received the 2019 French Heritage Society Literary Award.