Piers Morgan has called for Prince Harry and Meghan Markle to be stripped of their titles after Meghan hit out at Donald Trump.

The Duchess of Sussex was a surprise guest on Michelle Obama’s When All Women Vote event on Thursday, August 20, and appeared to take a dig at the President ahead of the election, saying: "We all know what’s at stake".

Meghan said: "We vote to honor those who came before us and to protect those that come after us…that's what community is all about and that's specifically what this election is all about.

"We all know what's at stake this year. I know it, I think all of you certainly know it if you are here at this fun event with us.

"You’re just as mobilized and energized to see the change we all need and deserve. This fight is worth fighting and we all need to be out there mobilizing to have our voices heard.

"If you aren't part of the solution, you're part of the problem. If you are complacent, you are complicit."

Meghan's comment angered Piers Morgan and he accused her of breaching royal protocol as royals are advised not to give political opinions.

In a tweet on Friday evening, the Good Morning Britain host urged the Queen to remove Harry and Meghan’s titles.

Piers wrote: "The Queen must strip the Sussexes of their titles. They can't remain as royals & spout off about foreign elections in such a brazenly partisan way."

He added: "Last time I checked she's still calling herself the Duchess of Sussex".