This is one of my favourite films. Hayley Mills plays twins who do not know the other one exists. They meet at camp and plot to switch places so they can meet their respective parents.
The plan is that their parents will have to meet to switch back the twins, romance will be rekindled and they will live happily ever after (which of course happens)!
In the midst of all of this plotting, there is a horrid fiancee to get rid of and a major make over to be done.
I have watched this film too many times to count - I never get bored of it (and I'm 28!). Hayley plays the part brilliantly and the camera work of splitting the film is very good, though they have obviously got a double in for some shots which you can tell isn't Hayley.
I love it, a must for any young lady!