This The Mentalist screencap contains
costume d'affaires, costume d’affaires, costume, costume de vêtements, and costume trois pièces.
There might also be
deux pièces, deux costume de pièce, maillot de salon, deux morceaux, deux pièces costume, costume salon, deux pièces de costume, costume de salon, costume simple boutonnage, costume à bretelles simples, costume croisé simple, costume double boutonnage, and combinaison à double boutonnage.
The writers and actors don't want those two to get together. In fact, they laugh at the fans that want them to. Which personally I find a bit rude, but I won't get into that. Anyway, their reasoning for them not getting together (at least right now) is "they have plus of a brother/sister relationship."
I'm sorry, but every time someone is trying to make an argument for why two people shouldn't be a couple, it's always either "they have no chemistry" ou "they have a brother/sister relationship." But I've never seen anyone deny Jane and Lisbon's chemistry, so I won't focus...