This movie is the best -twin sister meet and switch places to get their parents back together- its the first one, and my favorite. its in black and white, but it's really special because it's the movie that started the whole chain of twin movies. Definately a 10/10! I'm not sure if there's a version of it translated in english, but it's really great in german!! :-)
Review of Das doppelte Lottchen
