Salma Hayek: I felt intimidated filming Grown Ups
In the film, which also stars Adam Sandler, David Spade and Chris Rock, Hayek plays the wife of Sandler's character.
The film focuses on a group of men who gather together after their high school basketball coach passes away.
Speaking during an appearance on GMTV, the actress said that the script was "very funny" but that her co-stars kept adding to it.
"It was a little bit scary at the beginning because it wasn't like a little bit of improvisation, they would have one joke in the script and they would do it without cutting like 10, 12 different ways. You didn't even know when it was your turn to speak!"
This made her feel pressurised at the beginning, she said, but added that "later we were all improvising and it was really a blast".
Hayek's next movie project is Puss in Boots, where she will voice the character of Kitty.