Starring in one of Alfred Hitchcock’s best known films, Cary Grant can be seen wearing a grey suit in North By Northwest throughout most of the movie. If you watch closely though, you can notice in some close ups that the fabric is actually a very subtle Prince of Wales pattern in a grey/blue mix.
The villain, with a double breasted waistcoat. He has some great eyeglasses.
The famous sunglasses.
The classic scene.
A site note, in one of the following scenes Grant requests that his suit be sponged and pressed, not dry cleaned.