Mum-to-be ... Angelina Jolie and Brad Pitt are in hiding in Namibia / Reuters

Jolie in Namibia desert

Brad Pitt and Angelina Jolie have sold the first picture of their unborn baby for a staggering $5 million, according to a report.

The A-list couple - who are staying in Namibia while they await the birth of their first baby - have allegedly negotiated the huge fee with an American weekly magazine.

The money will be donated to charity.A source is quoted in Britain's Daily Mirror newspaper as saying: "They've signed a $5 million deal with a publication and the money will go to children's charity UNICEF.

"Angelina's very private but they figured they might as well use the opportunity of one child being born to help a lot of others."

Meanwhile, Brad's family have rubbished reports they are angry at the 'Tomb Raider' beauty.

It had been claimed the Pitts were upset and felt left out when Brad and Angelina left the US.

But the actor's brother, Doug, revealed the family can't wait for the new arrival.

He said: "We all want to help them get through the birth in any way we can.

We just want them to enjoy it and to know we're all thinking of them."