Here are some Paris outlets - will still get to the Italian ones:

Rue d'Alesia
This street has several including Evolutif (139) with Kenzo, Yves Saint Laurent and Cerutti. Kookai is at 111; Stock 2 (92) has Daniel Hechter.

Rue St. Placide
Mouton a Cinq Pattes is four outlets. Pilou (9) has last season Guy Laroche.

Mendes (65 Rue Montmartre) for Saint Maurent. Kanvin Soldes Trois (3 Rue de Vienne) for Lanvin. Pierre Cardin Stock (11 Boulevard Sebastopol).

Note: I haven't been to all of these recently, so can't say for certain that they're all still there.