There's also an anime version by TMS Entertainment, made in 1991. It has also been adapted as a film under its original title (a Truer to the Text version that retains author Erich Kästner as narrator and uses actual twins), as Twice Upon a Time and as Hibari's Lullaby (a Japanese telling). If this all sounds kind of familiar, both films titled The Parent Trap were based on it. Things take a turn for the dramatic when the girls' father decides to remarry and Lotte suddenly stops writing to Luise, who starts to worry about her sister. At the same time, 'Luise' doesn't like her favourite food any more, has started to look after her father's household, and is much better at maths. 'Lotte' has apparently forgotten how to cook during the holidays, is suddenly slapping one of her classmates, and is generally much less of a wallflower than she used to be. Luise and Lotte want to get to know their mother and father respectively, so they hatch a daring plan: Luise goes to Munich in Lotte's place, and Lotte goes to Vienna in Luise's. They soon figure out that they are actually twins and their parents separated years ago, splitting them up, and agreed to never tell the girls that they had a sister. However, over time they become friends and learn a lot about each other: They are both being raised by a single parent (Luise by her father and Lotte by her mother), they were both born in the same city, and they will both turn ten on October 14th of this year. Luise doesn't take it well that someone else is walking around 'with her face' and they get off to a rather bad start.

They are shocked to realize that they look completely alike, except for the fact that Luise's hair is curly while Lotte's is braided.

Loud, sassy Luise Palfy from Vienna and shy, responsible Lotte Körner from Munich meet in a summer camp for little girls in the Alps. Lottie and Lisa (original title: Das doppelte Lottchen) is a German children's book by Erich Kästner, written in 1949.

Erich kastner lottie and lisa