We all already know that Cameron Diaz has the mouth of a trucker. And she figured it time to broaden her 13-year-old co-star's vocabulary, so we taught her some bad words.
Cameron explained: "I did teach Abby how to say the f-word. I taught her how to drop the f-bomb in every way possible.
"I said, 'You're a child in an adult's world. I can't be a child for you.'
When she didn't swear, I said, 'You're starting to offend me, Abby. If you don't start swearing every three words then I will fine you.'
"I even told her mother that I was teaching her to swear and she said, 'It's about time.' "
In the movie Cameron plays Sara Fitzgerald, whose daughter Kate - played by Sofia Vassilieva - has terminal cancer.
Abigail stars as Sara's other daughter Anna, who was a designer baby born to help keep Kate alive.
This movie looks amazing, and is sure to be a hit at the box office. We can't wait to see it!