Justin Theroux Celebrates 'Details' Mag Cover at Private Dinner with Fiance Jennifer Aniston & Courteney Cox!

Justin Theroux gets together with his fiance Jennifer Aniston and Editor-in-Chief Dan Peres while attending Details magazine’s Private Dinner on Tuesday (July 15) in Los Angeles.

The 42-year-old actor and his love Jennifer, 45, were joined by Courteney Cox and her fiance Johnny McDaid, Malin Akerman, and Colin Egglesfield at the event celebrating Jutin‘s August 2014 cover issue.

PHOTOS: Check out the latest pics of Justin Theroux

Over the weekend, Justin was spotted keeping it cool in black while touching down at LAX Airport after his flight from New York City.

20+ pictures inside of Justin Theroux, Jennifer Aniston, and others at the Details magazine private dinner…