Madonna and David Beckham's sons are forecast to become the richest celebrities in Britain.

Youngsters Rocco Ritchie, nine, and Cruz Beckham, four, are tipped to have the most earning power in a new report which assessed the estimated worth of today's celebrity children in 20 years time.

Britain's Prince Harry will become a millionaire next week. The royal will inherit his share of the estate left by his mother, the late Princess Diana, when he turns 25 on Tuesday.

It is estimated the amount could be as much as £9 million [$15 million]. However, the prince, like his brother Prince William, is banned from spending any of the money until he is 30.

Britain's Prince William and girlfriend Kate Middleton shocked cinema-goers by popping in to watch a movie. The heir-to-the-throne and his partner of around eight years sneaked into a showing of "The Hangover" - in which a group of men go on a stag night and wake up the following morning with no memory of what happened - in West London.

A source said: "No-one expected royalty but they acted like normal people off the street. It was dark so not many people had any idea who they were. I think they liked the anonymity."

Natalie Imbruglia has denied she is dating Britain's Prince Harry. The Australian pop singer admits speaking to the 24-year-old royal at several functions, but denies they have ever been romantically involved.

In an interview with Australian radio station 2DayFM's Kyle and Jackie O Show, Natalie said: "He was at my birthday party, so I understand it was a bit like 'How did he end up there?'"

Britain's Prince William will reportedly marry in 2012. The prince and long-term girlfriend Kate Middleton, both 27, have an "understanding" that they will walk down the aisle before Queen Elizabeth's diamond jubilee in 2012 after William and brother Prince Harry have been established as a "winning double act" in a series of interviews, official engagements and foreign trips planned for next year.

Britain's Prince Harry is reportedly "drinking less" in a bid to win back Chelsy Davy. The 24-year-old royal has promised to curb his partying if the Zimbabwean-born beauty - who ended their relationship earlier this year because she was sick of his alleged womanizing - will consider dating him again.

A source told Britain's Now magazine: "Harry only has eyes for Chelsy and he's in the process of winning her back. He's promised he won't get with any other girls if there's a vague chance she'll take him back."