My all-time, hands-down favorite movie is
The Major and the Minor.
It's from the 40s and stars Ray Milland and Ginger Rogers. I love it! Ginger plays a girl who tries to make her way in New York. When that fails, she packs up to move back to Iowa...only she doesn't have enough money for train fare. She creates a scheme and dresses like a 12-year-old to get the half-fare price. She runs into Ray Milland and trouble along the way, winding up at a military school for boys. It's a hilarious romantic comedy!
It plays on TCM sometimes. The next showing isn't until September, but you could NetFlix it. Here's a link to the movie on TCM: The Major and the Minor. You can see the trailer and clips from the movie.
Happy Monday! 