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Nicole Richie is the reality-TV figure in the headline: she is married to Joel Madden, the twin brother of Cameron Diaz’s husband, Benji Madden. That makes Diaz and Richie sisters-in-law. The connection is longstanding, not a new revelation; what may surprise readers is how the two couples first came together.
How are Nicole Richie and Cameron Diaz related?
Richie is married to Joel Madden, and Joel is Benji Madden’s twin brother. Diaz married Benji, so the family link runs through the Madden brothers: Diaz is Richie’s sister-in-law, and Richie is Diaz’s.
ABC News reported Richie and Joel’s marriage in 2010 and quoted Richie describing herself as a “devoted sister-in-law” in 2014. Diaz and Benji’s marriage was reported in early 2015. ABC News’s 2014 report and El País’s 2026 report document the family connection and Diaz’s marriage.
How did Cameron Diaz meet Benji Madden?
The accounts agree that Richie and Joel were part of the social connection, but they describe the introduction differently.
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Nicole Richie’s account
In 2014, Richie told ABC News she had set Diaz and Benji up. She said, “I am a devoted sister-in-law and I am happy for anybody who’s happy,” and added that she would “take responsibility for everything.” Read ABC News’s interview with Richie.
Cameron Diaz’s recollection
In a 2016 interview, Diaz recalled knowing Richie and Joel before she met Benji. She said Joel asked whether his brother could come over to a barbecue at Diaz’s home: “Joel said, ‘Hey, can my brother come over?’” ABC News reported Diaz’s recollection. A 2021 Good Morning America interview also described Diaz meeting Benji through her “now sister-in-law” Richie. Read the interview.
Richie’s description presents the introduction as a setup; Diaz’s memory gives a specific scene for meeting Benji. Together, they place the future couple’s connection within Richie and Joel’s circle without establishing that either account is the sole definitive version.
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