King's Speech awaits Oscar sweep? Not so fast!

Having marched through Hollywood's major guild awards with hardly a misstep, royal film 'The King's Speech' has in past weeks been a frontrunner to sweep through the Oscars, but that may be about to change.

With only about 10 days to go before the world's top film honors, Oscar pundits are re-thinking their picks, and as much as co-hosts James Franco and Anne Hathaway are expected to bring a youthful glow to the awards show, the races for best actor and actress could offer some surprises, experts say.

The Academy Awards, where A-list movie stars like Nicole Kidman and Javier Bardem will turn out in their finest gowns, jewelry and tuxedos, unrolls its red carpet on Feb. 27, and already Hollywood is gearing up with a week of celebrations leading up to its biggest night of the year.

But the really big show will be Sunday's awards, where the tension is building not so much over whether "King's Speech" will win best film, as expected. Rather, the question is: can it sweep through the other top categories?.

"It looks like a 'King's Speech' coronation. The question is how wide will its influence spread", said veteran Oscar watcher Tom O'Neil of awards websites goldderby.com and theenvelope.com.

Drama "The King's Speech," which tells how British King George VI overcame his stammer to rally his countrymen on the eve of World War II, is widely expected to win best film after picking up similar awards from Hollywood guilds representing actors, directors, writers and producers.

Among 10 nominees for best movie, "King's Speech" faces its toughest competition from Facebook film "The Social Network," which won top honors among many critics groups but has fallen off the pace in recent weeks.

Other top nominees include ballet drama "Black Swan," "The Fighter," "True Grit" and "The Kids Are All Right."

In the best actor race, Colin Firth is widely picked to win for his performance as King George VI, but among actresses, the competition is too close to call between "Black Swan" actress Natalie Portman and Annette Bening in "Kids Are All Right."

Portman turned in a strong performance as a ballerina growing into womanhood, and has claimed many early awards, including Golden Globe and Screen Actors Guild trophies.

But Bening, who portrays a lesbian mother in "Kids," is a three-time loser at the Oscars, and there is a feeling that it is her time to win. Moreover, she is a member of the Academy's Board of Governors and is well-liked in the group.

"Annette Bening has been doing a lot of campaigning, and she has a lot of support," said Pete Hammond, Oscar watcher for Deadline Hollywood. "That (race) is ripe for a slight upset."

Among supporting actors and actresses, Christian Bale playing a drug-addicted boxer in "The Fighter" and Melissa Leo as his mother, are widely-picked to win.

But the experts said that if "King's Speech" sweeps through early categories like costume design, it will have momentum. Fans might see its supporting star Geoffrey Rush win. Likewise, Helena Bonham Carter in "King Speech" or 14 year-old Hailee Steinfeld in "True Grit" could claim supporting actress.

The tightest race is best director. "King's Speech" maker Hooper claimed top honors from Hollywood's directors, but Fincher took home the British film Academy's honor on Hooper's home turf. Experts said the race is too close to call.

Typically, the Academy has hired comics such as Jon Stewart or Ellen DeGeneres to host the show, but Franco and Hathaway are dramatic actors. Their choice is widely viewed as a move by the Academy to lure younger audiences.

Franco, Hathaway and the show's producers have been quiet about what they have in store on Oscar night, but in interviews with Oscar organizers the hosts echoed the "You're Invited" theme of this year's show, saying it was inclusive for movie audiences of all types and ages.

Hathaway said Franco would be the perfect host because he'll do just about anything to get the right performance.

"When it comes to taking risks, especially in comedy and all kinds of performance, I think James is the most brave actor of my generation," Hathaway said. "I don't think he has any kind of ego about that stuff."

Last year's telecast lured 41 million US viewer -- the most-watched Oscars in five years -- and organizers hope to maintain that momentum. In fact, the recent Grammy (music) and Golden Globe (film and TV) awards saw increased viewers.