Actress-filmmaker Angelina Jolie is getting her "baby fix" on sets.

The 40-year-old has six children - Maddox, 14, Pax, 11, Zahara, 10, Shiloh, 9, and seven-year-old twins Knox and Vivienne - with husband Brad Pitt, but now that they are getting older she is thrilled that her new movie `First They Killed My Father` requires hundreds of young children, reports people.com.

`I'm surrounded by toys. We have 250 children in a scene, so I filled the house, my car, my trailer with toys. It's my 'I love babies' fix," she said.

However, Jolie said the film, which is about the Khmer Rouge Regime in Cambodia, is `going to be the hardest movie" on her maternal side as it features children in labour camps.

She explained: "They have to go through a labour camp. They have to cry and scream. My instinct is to want to cut and hug everyone."