A very different kind of princess, for a very different kind of prince.

Prince Harry has confirmed his engagement to Suits star Meghan Markle.

The couple are likely to marry in the middle of next year, after William and Kate's third child arrives in April.

Princess Diana's biographer Andrew Morton told Rachel Smalley Meghan Markle is like no other princess that's come before.

"She's a divorcee, she's a Catholic which obviously precludes her from the line of succession. She's forged her own career, she's not been waiting for somebody to ask her for her hand in marriage."

LISTEN TO ANDREW MORTON TALK WITH RACHEL SMALLEY ABOVE