Guess Who stars Ashton Kutcher and Bernie Mac

The film, which stars Bernie Mac and Ashton Kutcher, took $21.9m (�10.9m) in its first three days on release.

Miss Congeniality 2, which stars Sandra Bullock, entered the chart at number two. The film was released on Thursday and has taken $17.6m (�9.1m) so far.

Last week's chart-topper, The Ring 2, fell to third place.

Animated adventure Robots and the Vin Diesel comedy The Pacifier, both former chart-toppers, completed the top five.

Inter-racial

The original Guess Who's Coming To Dinner starred Katharine Hepburn, Spencer Tracy and Sidney Poitier, and focused on a middle-aged couple who discover their daughter is engaged to a black man, at a time when inter-racial romance was still rare.

It received 10 Oscar nominations and won two, including best actress for Hepburn. Tracy, who died shortly after the film was completed, was nominated for best actor.

In the new version, the roles are reversed, and the focus is on a black family who discover their daughter's boyfriend is white.

US/ CANADA BOX OFFICE 1) Guess Who - $21m (�10.9m) 2) Miss Congeniality 2 - $17.6m (�9.1m) 3) The Ring 2 - $13.8m (�7.2m) 4) Robots - $13m (�6.7m) 5) The Pacifier - $6.6m (�4.4m) Source: Exhibitor Relations

"Guess Who's Coming To Dinner is the inspiration, but this is very broad comedy that plays really well in the buddy mode as well as the romantic comedy mode," said Rory Bruer, head of distribution for Sony who released the film.

Other new films did well in limited release, including Woody Allen's latest, Melinda and Melinda, which took $790,000 (�412,000) from 95 cinemas, after opening on one screen in New York the previous week.

Meanwhile, The Ballad of Jack and Rose, starring Daniel Day-Lewis, opened at four cinemas and took $60,461 (�31,561).