These principals all came together in The Man Who Knew Too Much.

They created movie magic at its finest.  Time travel back to 1956. American surgeon, Dr. McKenna (Jimmie Stewart) takes his wife (Doris Day) and young son to visit Morocco, for he had been there, serving in North Africa during WWII.  They literally stumble into all kinds of espionage and trouble in Marrakesh, and their son is kidnapped in the process.

Alfred Hitchcock directed this classic film and Edith Head made this sketch of a beautiful suit for Doris Day to wear in the critical parts of the movie.

 

The suit seen above, without the stole, was realized in gray silk and Miss Day wears the suit throughout the second half of the film, during which she is seen in Albert Hall in London, as well as in the Embassy of some unspecified but critical country.  Her kidnapped son had been taken to London and she and Mr. Stewart are there to find him.

I loved the movie and highly recommend it.  Here are the lead actors and the director:

 

And here is the poster advertising the film.