Insiders claim the actress wanted to increase her chances of having twins

Angelina Jolie is rumoured to have undergone fertility treatment to help get pregnant.

The actress and partner Brad Pitt, 44, welcomed son Knox Leon and daughter Vivienne Marcheline into the world on 12 July.

But US sources claim Ange, 33, had IVF to improve their chances of having twins.

‘They conceived through in vitro fertilisation,’ a source tells Us Weekly.

‘They both desperately wanted more babies soon.’

The procedure gives women a 25% of having a multiple birth. Naturally it’s just 1%.

The couple are also parents to Shiloh, 2, and adopted kids Maddox, 6, Pax, 4, Zahara, 3.

Alison Adey