Who wore a beautiful sari in the mixed up files of mrs basil e frankweiler?

The character who wears a beautiful sari in *The Mixed-Up Files of Mrs. Basil E. Frankweiler* is Claudia Kincaid, the book's main character.

While visiting the Metropolitan Museum of Art, Claudia observes a woman wearing a sari, and she is mesmerized by its beauty. She later uses this inspiration to create her own "sari" out of a bedsheet, which she wears while posing as a wealthy art connoisseur.