Benji Madden and Cameron Diaz Benji Madden and Cameron Diaz

Cameron Diaz is officially off the market.

The actress married her boyfriend, Good Charlotte's Benji Madden, on Monday at her home in Beverly Hills, Us Weekly reports.

See more celebrity wedding news

The celebrity guests included Reese Witherspoon, Gwyneth Paltrow, and Madden's twin brother and bandmate Joel Madden and his wife Nicole Richie. Madden and Richie's 5-year-old son, Sparrow, acted as ring bearer, according to Us. Richie, who introduced the couple, and Drew Barrymore were two of Diaz's bridesmaids.

Diaz, 42, and Madden, 35, began dating in May and got engaged in December. This is the first marriage for both.

On the Set: What's on the Supernatural stars' wish list?