How do you say he is wearing a white shirt in French?

There are a few ways to say "He is wearing a white shirt" in French, depending on the level of formality and the context. Here are some options:

Formal:

* Il porte une chemise blanche. (This is the most common and neutral option.)

Informal:

* Il a une chemise blanche. (This is less formal and more common in everyday conversation.)

* Il est en chemise blanche. (This literally translates to "He is in a white shirt" and is more informal.)

You could also use the verb "être vêtu de" which means "to be dressed in":

* Il est vêtu d'une chemise blanche.

The choice ultimately depends on the context and your desired level of formality.