Cameron Diaz and Benji Madden held their rehearsal dinner on Sunday, Jan. 4, ahead of their wedding, Us Weekly can exclusively reveal -- get the scoop here. Credit: FAMEFLYNET

She's ready to be a wife! Cameron Diaz and her fiancé Benji Madden are getting married on Monday, Jan. 5, Us Weekly can exclusively reveal. Prior to the ceremony, the couple hosted an intimate rehearsal dinner in Beverly Hills on Sunday, Jan. 4.

Upon arrival, guests were handed drinks as they awaited the meal, which started at around 7:30 p.m. According to the insider, the group stayed at the location for about three hours.

Their secret wedding comes after a whirlwind seven-month romance, and less-than-one-month engagement. (Us Weekly first broke the news that Diaz was engaged to marry the Good Charlotte rocker on Dec. 19.) See photos of the couple after their engagement

Diaz, 42, and Madden, 35, were first linked together last May, after being introduced by his sister-in-law Nicole Richie.

"Everyone thinks it's wild, but are so happy for them," one source previously told Us of their engagement news. "Benji tends to fall in love easily, but this time it's for real and he landed a great girl. They obviously both make each other incredibly happy, and there's nothing better than that."