Jolie: 'Twins will be a challenge'

Angelina Jolie has revealed that Brad Pitt's parents are on hand to help care for the couple's unborn twins.

The actress, who already has four children, said she was initially shocked to hear that she was carrying two more.

She told Entertainment Weekly: "We weren't expecting twins... but we like a challenge. [Brad's] mum and dad are on standby to come out [to France] and help."

Jolie added that she will take steps to ensure that Maddox, Pax, Zahara and Shiloh do not feel left out when the new babies arrive.

She said: "They're old enough to feel included, to change diapers themselves, to feed bottles themselves.

"We're trying to find ways where it can be a fun group thing... Everybody gets special time."

Jolie is said to be planning a natural birth at the estate the couple have rented in Provence.

> Angelina Jolie: 'Childbirth is fascinating'