How do you say my favorite niece in french?

There isn't a direct translation for "my favorite niece" in French. You can use a few different options depending on the context and desired level of formality:

Formal:

* Ma nièce préférée: This is the most literal translation, and it sounds formal.

* La nièce que j'aime le plus: This translates to "the niece I love the most" and also sounds formal.

Informal:

* Mon petit bout de chou préféré: This literally translates to "my favorite little darling," which is very endearing and affectionate.

* Ma nièce chérie: This translates to "my darling niece" and is very sweet.

* Ma nièce préférée: You can also use the formal version "ma nièce préférée" informally, but with a more loving tone.

Ultimately, the best way to say "my favorite niece" in French depends on your relationship with your niece and the context of the conversation.