Jolie collapses on 18-hour flight?

Angelina Jolie has collapsed while on an 18-hour flight, say reports.

According to The Sun, the actress was given oxygen and medical treatment during a flight between Iraq and LA.

"She started to get nose-bleeds and cramps. She fainted," said a passenger.

Jolie, who was visiting Iraq as a UN goodwill ambassador, is rumoured to be pregnant with Brad Pitt's second child.

It was reported last month that the couple are expecting twins.