Formal:
* De gros câlins: This is the most literal translation, meaning "big hugs."
* Une grosse étreinte: This is a more formal way to say "a big embrace."
Informal:
* Des gros câlins: This is the most common way to say "big hugs" in a casual setting.
* plein de gros bisous: This means "lots of big kisses" and is a very affectionate way to say "big hugs."
* Gros bisous: This is a short and sweet way to say "big kisses," which can also convey the meaning of "big hugs."
You can also combine these phrases with a specific word for "you," depending on the context:
* De gros câlins à toi: (Big hugs to you)
* Gros bisous à vous: (Big kisses to you [plural])
Ultimately, the best way to say "big hugs" in French depends on your relationship with the person you are talking to and the level of formality of the situation.