Jolie and Pitt plan 'sibling party'

Angelina Jolie plans to host a "sibling party" for her four kids when she brings home her unborn twins - so everyone can celebrate the new arrivals.

The actress, who confirmed she's pregnant with twins during a TV interview at the Cannes Film Festival in France on Wednesday, insists the party idea is a great way of making older brothers and sisters feel good about babies.

She says: "It's like: 'Congratulations, your big brother, cake.' It's a big deal. I think it's just mainly so their life doesn't feel like the new babies' make their life feel smaller."

The actress is reportedly due to deliver the babies on August 19, according to 'Today' show's Natalie Morales, who says Jolie's 'Kung Fu Panda' co-star Dustin Hoffman let the date slip in an interview.

The babies will be Jolie's fifth and sixth children, and her second and third biological kids with partner Brad Pitt.

The couple has three adopted children, Maddox, Pax and Zahara. Their first natural child, Shiloh, will turn two this month.