Julia Roberts is in The City of Light … and, her smile can light up a room — ’cause she was grinning wide while walking into the César Awards in Paris!

The famed actress stepped out Friday for the ceremony wearing a chic black ensemble … and, she looked to be enjoying her European vacay.

Roberts flashed her grin for photogs on her way into the building … before she went inside to accept her Honorary César — a lifetime achievement award from the Académie des Arts et Techniques du Cinéma.

Julia received a long standing ovation from the crowd while accepting the honor … before giving a speech without the aid of notecards — and struggling to put into words what it meant to her.

The César Awards are essentially the Oscars put on by the Parisian-based group. … and, they handed out a ton of awards last night — including Best Film to the controversial flick Emilia Perez which has been nominated for 13 Oscars.

The films nominated are all non-English movies it seems … so, flicks like “Wicked” and actors like Timothée Chalamet weren’t up for anything at the ceremony.

The Oscars are tomorrow … and, it looks like Julia might be skipping the biggest night in Hollywood to enjoy the Champs-Élysées and the Seine.