According to People Magazine, the 'Leftovers' actor, 46, looked happy, relaxed and stylish at the Louis Vuitton womenswear show in Paris, France on Tuesday.
He was dressed in all black with a sleek leather jacket and no wedding ring.
An insider revealed, "Justin and Jen still talk all the time."
Earlier this week, Jennifer Aniston was spotted sans the rock on her finger recently outside pal Courteney Cox's Beverly Hills condo.
Aniston kept the look casual, wearing a white tee, ripped jeans, a chic black coat and a necklace.
The 49-year-old actress announced her split from husband Theroux on February 15.
While Aniston and Theroux have seemingly stayed under the radar since their breakup, the latter was recently spotted in New York City for the first time since the announcement, after cancelling his scheduled appearance on 'The Late Show With Stephen Colbert'. (ANI)