and Drew Barrymore
like to "bro out".
The actresses - who appeared in the 'Charlie's Angels' movies together - have a strong friendship and love nothing more than having "crazy" adventures together.
Drew said: "She's my sister, but we bro out and have crazy adventures. I always know that she's game. Most people don't know this, but she's very edgy.
"That's been a big part of our friendship, knowing that she'll throw down at any time, as well as that sisterly love that we have."
Cameron, 38, loves her friendship with "wise" Drew because she knows she can always depend on her.
She told Cosmopolitan magazine: "Drew is wise and a solid friend. It's crucial to have friends who will have your back, and Drew always has mine."
The 'Bad Teacher' star is happy to advise her pal, but has learned throughout their friendship not to be blunt when giving career tips.
She explained: "It's all in how you say it. Rather than saying, 'Hey, you always do this,' you can say, 'Have you realised that when you do that, this happens?' "