Demi Moore and Ashton Kutcher are said to be planning a secret wedding in the US' casino capital Las Vegas.

The Hollywood actress, 42, and the handsome actor, 27, have reportedly commissioned matching wedding rings from celebrity jeweller Neil Lane, reports internet portal Femalefirst.

A source close to the pair revealed: "Demi and Ashton went to Lane for one reason - their wedding is being planned."

Friends say the ceremony will be held at the famous Bellagio hotel and casino, where the movie "Ocean's 11" was filmed.