George Clooney has hit out at media treatment of the Duchess of Sussex, comparing it to that of Princess Diana and saying: "We've seen how that ends."

The actor, who attended the royal wedding with wife Amal last year, said Meghan was a "seven months pregnant" woman who is being "pursued and vilified".

It comes after the publication of a personal letter apparently written by the duchess to her father, Thomas Markle, telling him her heart was "broken into a million pieces" because he gave press interviews, fabricated stories and attacked Prince Harry.

Clooney, 57, made the comments after joking about a report suggesting he would be named godfather to Harry and Meghan's baby.

Speaking at an event in Los Angeles, the Hollywood star said: "I do want to say, I just saw this piece.

Clooney said it was "irresponsible" and that Meghan was getting a "raw deal".

He continued: "I can't tell you how frustrating it is to see that. You're taking a letter from a daughter to a father and broadcasting it everywhere.

"She's getting a raw deal there, it's irresponsible. I'm sort of surprised by that."

Clooney and Amal, a human rights lawyer, are parents to 18-month-old twins, Ella and Alexander.