Plural Pronouns in French
So, I know that, "vous," can be both the singular and formal way of "you," as well as "you all." But is "vous," in the sense of meaning "you all," formal or informal?
Formal with one person/group of people you don't know well and informal with several people you do know well (with one person you know well / single family member you would use tu).
Remember, tu is always singular. So, if you want to say "I love you (all)" (as in family) you would need to say Je vous aime.