Brad and Angelina
Brad and Angelina, who already have six children, are reportedly engaged and expecting twins

It looks like it is set to be a very busy year for Angelina Jolie and Brad Pitt following reports that they are finally engaged and expecting another set of twins.

The Hollywood couple, who already have six children together, are said to be planning an autumn wedding ahead of the double birth.

The couple would not comment but friends say the reports are true.

A source told US OK! magazine: "Angie is expecting twins this fall so it is making them feel crunch-time.

"They decided they'd both like to welcome their twin boys to the world as man and wife, which means the wedding has to happen fairly soon."

The couple have already fuelled wedding rumours by building a white marquee next to a private chapel on their French estate.

Jolie, 36, and Pitt, 48, who have been together for seven years, have just come through a rockly patch.

The insider claimed: "The wedding was off. They were having so many arguments, but they've finally managed to bury their differences."