Parts of this episode are references to the novel/movie "The Devil Wears Prada"
Frances Fisher played Nathan Fillion's mother in "the rookie"
"Castle" costume designer Luke Reichle designed the elaborate silver lace and crystal-encrusted wedding dress worn by series star Stana Katic in "Dressed to Kill" (S6, E14). Although the gown was one-of-a-kind, the designer speculated that a reproduction would cost somewhere north of $30,000 to produce and sell.
More accurately the main suspect is an homage to Anna Wintour, the famous fashion editor. The Devil Wears Prada is also based on Anna Wintour.