The Swan (1956) 720p, for 1080p see comment below Grace Kelly, Alec Guinness, Louis Jourdan

Princess Beatrice s days of enjoying the regal life are numbered unless her only daughter, Princess Alexandra, makes a good impression on a distant cousin when he pays a surprise visit to their palace. Prince Albert has searched all over Europe for a bride and he s bored by the whole courtship routine. He is more interested in the estate s dairy than Alexandra s rose garden. And then he starts playing football with the tutor and Alexandra s brothers. Invite the tutor to the ball that night and watch how gracefully Alexandra dances with him.