Kate Middleton's engagement ring resized

Kate Middleton's engagement ring has had to be reduced in size.

The brunette beauty - who is set to marry Britain's Prince William at London's Westminster Abbey on April 29 - has asked for her engagement ring, which belonged to his late mother Princess Diana, to be resized because she is terrified it will fall off during the ceremony.

A source told Britain's The Sun newspaper: "The band was turning. Kate absolutely adores it and didn't want to cause a fuss.

"A bride's worst nightmare is looking down and seeing her ring has fallen off. One can only imagine how this is magnified when you are marrying the future King of England."

Kate has now asked Crown jewellers G Collins and Sons to attach two tiny platinum beats to the inside of the ring to make it a size I, one step up from Kate's size H finger, to make it comfortable.

The £32 million ring was given to William by Kate after the pair got engaged in Kenya last October so that his mother Diana - who was killed in a Paris car crash in 1997 - would be part of their big day.

Kate and William will marry at London's Westminster Abbey in front of 1,200 guests including David and Victoria Beckham, Elton John and David Furnish.