Cameron Diaz and Benji Madden named their first child Raddix, and fans have thoughts about the unique moniker

Getty Images / Donato Sardella

• Cameron Diaz and Benji Madden named their first child together Raddix Madden.

• The 47-year-old actress posted an Instagram message on Friday announcing their daughter's arrival.

• "We are so happy, blessed and grateful to begin this new decade by announcing the birth of our daughter, Raddix Madden," the new mother wrote. "She has instantly captured our hearts and completed our family."

• "While we are overjoyed to share this news, we also feel a strong instinct to protect our little one's privacy," Diaz continued, noting that she wouldn't be including photos or details about the newborn "other than the fact that she is really really cute!! Some would even say RAD:)."

• Following the actress' Instagram announcement, fans reacted to the baby's name on Twitter.

• Visit Insider's homepage for more stories.

Cameron Diaz and Benji Madden came up with a memorable name for their first child together: Raddix Madden.

The 47-year-old actress announced the birth of the married couple's daughter in an Instagram post on Friday.

"Happy New Year from the Maddens! We are so happy, blessed and grateful to begin this new decade by announcing the birth of our daughter, Raddix Madden," Diaz continued. "She has instantly captured our hearts and completed our family."

The post didn't include a photo of the Madden family to accompany the news.

The actress explained, "While we are overjoyed to share this news, we also feel a strong instinct to protect our little one's privacy. So we won't be posting pictures or sharing any more details."

The "Shrek" actress divulged that Raddix is "really really cute!! Some would even say RAD:)."

Insider reported that while Raddix "isn't a word, the Latin word 'Radix' means 'root' and is used to describe the base of a number or computer system." It's unconfirmed how the couple decided on the name.

While many celebrities are known to get creative when it comes to naming their children, fans were surprised and confused by Diaz and Madden's choice.

Other fans expected nothing less from the Hollywood couple, who will celebrate their fifth wedding anniversary on Sunday.

Diaz and Madden are also private about their relationship, but the actress opened up about her husband in an August 2019 interview with InStyle.

"Getting married to him was the best thing that ever happened to me," Diaz said. "My husband's the best. He's the greatest human being, and he's my great partner. Marriage is certainly hard, and it's a lot of work. You need somebody who's willing to do the work with you, because there's no 60-40 in marriage. It's 50-50, period. All the time."

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