Report: William and Kate visited Diana's grave

A British newspaper says Prince William and his bride-to-be, Kate Middleton, have visited the grave of William's mother, Princess Diana.

Clarence House, William's official residence, isn't commenting on the story in the Daily Mirror, CBS News royal contributor Victoria Arbiter reported on "The Early Show" Thursday.

Clarence House, she added, said it "would be a very private matter if, indeed, it did happen."

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But, Arbiter continued, "It makes sense that William would want to take Kate to the final resting place of his mother. They're thought to have gone last week to Althorp, which is the Spencer family (Diana's family) estate, (and) has been since the 16th century, and they went on a boat over to the island and visited Diana's final resting place, as well as the two trees that William and (his brother, Prince) Harry planted following her funeral."

Arbiter also told co-anchor Erica Hill about Kate's second shopping trip in as many days for items for her honeymoon, and about a very special dual-celebration today at Westminster Abbey.

To see her report, click on the video below: