A bit of surprise, as it’s a more recent classic. I never noticed because all adults were old when you’re small, but features an aged Cary Grant with the iconic Audrey Hepburn. Like many classic movies you can find full versions on YouTube. https://youtu.be/NADtVKJrPzs
Although I’m not sure how copyright works with specific versions of movies as there are also lower resolution versions in places like the internet archive.