How can you say your sister is called in french?

You can say "My sister is called..." in French in a few different ways, depending on the context:

Formal:

* Ma sœur s'appelle... (This is the most common and neutral way to say it.)

Informal:

* Ma sœur, c'est... (This is a more conversational way to say it.)

* Mon sœur se nomme... (This is a more formal, but still informal, way to say it.)

Example:

* Ma sœur s'appelle Marie. (My sister is called Marie.)

* Ma sœur, c'est Camille. (My sister is Camille.)

Note:

* In French, you use the definite article "la" or "le" before a noun that is already known, like "ma sœur".

* The verb "s'appeler" is a reflexive verb, so you need to use the reflexive pronoun "se" before it.