Actress Cameron Diaz attends a private luncheon in celebration of Hollywood Costume at the future home of the Academy Museum of Motion Pictures in Los Angeles, California October 8, 2014.
Actress Cameron Diaz attends a private luncheon in celebration of Hollywood Costume at the future home of the Academy Museum of Motion Pictures in Los Angeles, California October 8, 2014. Reuters/Kevork Djansezian

Cameron Diaz and one-time “The Voice Kids Australia” coach Benji Madden are said to be marrying on Monday night in the U.S. The couple, who began dating in May 2014, are reportedly gearing up to tie the knot at her home in Beverly Hills.

According to several reports, Diaz and Madden have just hosted a rehearsal dinner on Sunday, January 4, for their special day on Monday. They invited a small group of their family and friends over for dinner at the Il Cielo restaurant during the night. During the day, however, Diaz spent time without her fiancé at her own bachelorette party with her girlfriends.

According to People magazine, the couple’s house has become a busy venue for their wedding. Party rental trucks and flowers arrived on Monday morning at Diaz’s mansion, where the 35-year-old musician also lives.

Celebrity wedding planner Yifat Oren was also spotted arriving at their home, where a huge tent has already been put up. Reese Witherspoon, Diaz’s friend, is reportedly on the guest list.

“There is a lot of security and they are trying to keep the wedding hush-hush by telling neighbours that Cameron is having a pre-Golden Globes party tonight,” a source told the paper. “It will start past dark tonight. They are setting things up in the lush backyard.”

TMZ posted photos of the aerial view of the house’s backyard, where a walkway covered in white has been set up, presumably it’s the aisle on which Diaz would walk down.

Diaz, 42, and Madden only started dating in May after Nicole Richie, who is married to Madden’s twin Joel, introduced them to each other. Richie proudly took credit for her friends’ relationship, telling “Watch What Happens Live” that she’s such a “devoted sister-in-law” to Madden that she approves of anything that’s going to make him happy.

This will be the first marriage to both of them, though Madden had been engaged before to Australian singer Sophie Monk. Diaz, who once told Esquire magazine that she was in no rush to get married, had been in high-profile relationships with Matt Dillon, Jared Leto, baseball player Alex Rodriguez and Justin Timberlake.