Cameron Diaz [1] and Benji Madden made a rare outing together on Thursday night when they attended the launch party for Nicole Richie [2]'s House of Harlow x Revolve clothing line in LA. The couple, who have been married since January 2015, looked so happy [3] as they posed for the cameras and cozied up to each other at the outdoor event. In addition to their sweet moments, Cameron also posed with her sister-in-law Nicole in front of the picturesque sunset and mingled with her brother-in-law (and Benji's twin brother) Joel, and Nicole shared a laugh with her dad, Lionel Richie.

On Tuesday, the actress took to Instagram to congratulate Nicole [4], writing, "We're sisters because of our misters and I am SO impressed by and proud of how talented she is. Her capsule collection at Revolve is a wonderful reflection of her spirit and her style; sexy and chic, playful and grounded, feminine with a hint of masculine, retro yet contemporary. Congrats and 😘😘😘 @nicolerichie #hohxrevolve." Keep reading to see more from the fun night, then find out Cameron's cute nickname for Benji [5].