Cameron Diaz and Benji Madden Go on Double Date with Nicole Richie and Joel Madden

Cameron Diaz and Nicole Richie's husbands Benji Madden and Joel Madden performed with their band Good Charlotte at a launch event for Veeps All Access

Cameron Diaz and Nicole Richie enjoyed a fun night out cheering on their musician husbands.

On Tuedsay, Diaz, 51, and Richie, 42, were seen in Los Angeles attending the launch party for Veeps All Access alongside their husbands, event hosts and twin brothers Benji Madden and Joel Madden.

Diaz and Benji, 44, wore matching black outfits to the event, while Richie wore a colorful gown alongside Joel's all-black getup. Nicole's sister Sofia Richie Grainge was also at the event, and Nicole could be seen snuggling up to Diaz in one picture on the red carpet.

Benji and Joel performed at Wednesday's event with their band Good Charlotte as they promoted Veeps, which touts itself as "a streaming service that offers direct access to live concerts, music and events, from anywhere in the world," per the service's website.

Other celebrity guests at the West Hollywood event included musician Orville Peck and musician-comedian Reggie Watts.

Diaz and Benji have been married since 2015 and share daughter Raddix, 3½. Nicole and Joel tied the knot in December 2010 after they initially began dating in 2006. The couple share two children: daughter Harlow, 15, and son Sparrow, 14.

Related: Cameron Diaz and Benji Madden's Relationship Timeline

Benji shared photos from Tuesday's event on his Instagram Thursday morning, writing in a caption that the event was held "with our beautiful families and friends, our whole team @mddnco @livenation our Artist Fam, industry friends, family friends [who] all showed up to celebrate with a secret little @goodcharlotteband show just for fun 🤘😎"

"great night and great way to bring live music into people’s living rooms!!! 🔥🔥👊👊👊 blessed to get to be a part of the future!" he added.

Back in August, the musician celebrated Diaz on her 51st birthday. On Instagram, Benji wrote that while he does not often use Instagram, he has "grown to like my little tradition of coming back on special occasions to show love to my Queen."

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

“So today, it’s a very Happy Birthday to my beautiful wife, best friend, best partner in everything, ride or die, greatest Mom to our little girl, @Avaline wine boss, family chef, advisor, collaborator and everything else," he wrote alongside a photo of Diaz smiling and cuddling a cat.

"You do it all ❤️ So grateful to have our family and I am one lucky man - I know that seems obvious but it really is nice to say it out loud now and then when you’re feeling it ❤️ 🙏” he added in the caption.

“I love you •forever •always •yours •true love ❤️ Happy Birthday Cameron ❤️😍.”

Related: Nicole Richie and Joel Madden's Relationship Timeline

Diaz has reacted to past social media posts expressing surprise that she and Richie are related by marriage, such as in 2020, when she responded to a meme account post that said: "Nicole Richie & Cameron Diaz are sister in laws and I feel like we don't talk about that enough."

Diaz commented with a string of emoji, including one with an exploding head, as captured by Comments By Celebs. "👯‍♀️?!? 🤯!!! 😉😉 @nicolerichie," she wrote at the time, tagging her sister-in-law.

For more People news, make sure to sign up for our newsletter!

Read the original article on People.