Angelina Jolie is too thin, according to doctors

Angelina Jolie's Doctors have reportedly warned the waifer-thin actress that she's too skinny to have a baby.

According to Now Magazine, 43-year-old Brad and 32-year-old Angelina have been trying for another baby for three months, but nothing's happened.

'Now she knows why,' a source claims. 'The doctors told her that she's far too thin and needs to put on about a stone.

'Her body's just not ready for another baby. She's always been thin and was slightly below the perfect weight when she became pregnant with Shiloh, but managed to eat herself back up to a healthy size.'

Angelina's weight plummeted after the death of her mother Marcheline Bertrand, who lost her cancer battle in January.