Gwyneth Paltrow & Boyfriend Brad Falchuk Celebrate Cameron Diaz's Birthday!

Gwyneth Paltrow and her boyfriend Brad Falchuk celebrate with Cameron Diaz at her birthday party on Tuesday (August 30) at New School of Cooking in Culver City, Calif.

Also in attendance at the actress 44th birthday bash were hubby Benji Madden, sister in law Nicole Richie and brother in law Joel Madden, along with a few other guests.

Gwyneth posted a cute selfie of her, Cameron, and Drew Barrymore on Instagram to wish Cameron a happy birthday!

“Dear @camerondiaz, before the day ends, I bid you a happy birthday, and I hit the ground with gratitude for getting to be one of the women who calls you a best friend,” she wrote.