Paul Burrell warns Kate Middleton's life will 'change completely'

Kate Middleton has been warned her life will "change completely" when she marries Britain's Prince William.

Paul Burrell - the former butler of the late Princess Diana, who was once described as her "rock" - explained the 29-year-old beauty should be "careful what she wishes for", as he witnessed the struggles Diana went through during her life in the public eye.

He said: "Be careful what you wish for. The minute she walks out of Westminster Abbey as a princess her life will change completely."

While 52-year-old Paul - who has been criticised for cashing in on the memory of Princess Diana following her untimely death in 1997, and has seen Princes William and Harry distance themselves from him - hasn't been invited to the royal wedding on April 29, he thinks the impending nuptials are a "great thing for the world".

Speaking to Fox News, he added: "I'm not invited, but I've known William since he was a baby. I've watched both of them grow up into fine young men. I'm very excited for him. I think it's a great thing for Britain and a great thing for the world.

"Harry is a great guy. If you want a party and want to have a great time you go with Harry."