Floriane, a French fan, posted pics and a write-up (en francais) of her Robert Pattinson encounter on her blog, howtobe-france.blogspot.com. Lucky duck! Thanks to Portal Twilight for the tip!
She also snagged pics with Michael Angarano, Kristen Stewart's boyfriend, during the Twilight Paris promo trip.
EDIT: Wow! I can't believe that Floriane reads my blog and left me a nice comment. Merci Beaucoup, Floriane! J'aime bien votre blog! (My French language skills are lacking -- sorry!)