HP stars enter the Guinness World record...

Emma Watson and Daniel Radcliffe stars of the Harry Potter franchise Photo: AP

Despite their tender years - Watson is 19, while Radcliffe celebrated his 20th birthday in July - the duo have outstripped the fortunes of their Hollywood rivals thanks to the success of the Harry Potter films.

The figures from the new edition of Guinness World Records is based on box office takings. The first six Harry Potter films have grossed $5.4 billion, and there are two more to come.

Radcliffe's films earn an average of $558 million, while Watson is ahead of $753.7 million as last year she also starred in The Tale of Despereaux, a children's animation in which she voiced a princess.

BBC show Strictly Come Dancing is the most successful reality television format in history, according to Guinness, as it has been sold to 38 countries.

Miley Cyrus is the highest earning child actor, pocketing an estimated $25 million last year for her films, television shows, records and concert tours.

The Dark Knight, the Batman film starring the late Heath Ledger, has no fewer than 10 separate entries in the book, including highest-grossing opening day.

Other new entries in the book are unlikely to occupy pride of place on the stars' CVs. Nicole Kidman is listed as the most overpaid actress in Hollywood, with a box office gross of only $1 for every $1 taken at the cinema. [/quote]

Source: Telegraph