Cameron Diaz turned 44 on Tuesday, and some of her famous girlfriends took to social media to send birthday wishes her way. Gwyneth Paltrow gave Cameron an incredibly sweet shout-out on Instagram on Aug. 30 when she posted a cuddly photo of them hanging with Cameron's longtime friend Drew Barrymore. In the snap, the trio flash smiles for the camera while hanging out by what appears to be a backyard pool. "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," Gwyneth wrote. Of course, Cameron is no stranger to her friends boasting about how awesome she is. Everyone from Drew to Nicole Richie has spoken out about why she's a great friend, actress, and person. And Cameron's husband, Benji Madden, has also had more than a few adorable things to say about her. To say she's loved is definitely an understatement!