TORONTO -- One of the biggest celebs at the Canadian Screen Awards also happened to be the smallest: nine-year-old breakout Jacob Tremblay sauntered down the red carpet like a pro, offering up his best paparazzi poses.

The "Room" actor was among a constellation of stars greeting fans and media at the annual celebration of homegrown film, television and digital media Sunday, with more seasoned actors including Christopher Plummer, Martin Short, Eugene Levy and Catherine O'Hara.

The biggest catcalls were arguably reserved for Tremblay, who has emerged as a media darling after aww-inducing appearances at the Screen Actors Guild Awards, the Critics' Choice Awards and the Academy Awards.

Despite his Hollywood success, Tremblay said it was good to be home.

"I'm Canadian so it's pretty good to be recognized in my hometown," said Tremblay, up for the best film actor prize.

"I'm not really used to all this stuff and I still get nervous at these shows but this is like one of the first Canadian awards show I'm going to. It's probably the only one, so I'm excited."

The Canada-Ireland co-production "Room" is up for a leading 11 awards, including best picture, best director for Dublin's Lenny Abrahamson, best adapted screenplay for London, Ont.-based Emma Donoghue and best actress for U.S. starlet Brie Larson.

Vancouver's Tremblay, dressed in a dark three-piece pinstripe suit with a red bow tie, said he was rooting for Donoghue, who adapted her own acclaimed novel about a five-year-old who learns he's spent his whole life in captivity.

He faces stiff competition from stage and screen legend Plummer, who Tremblay said he knew from the animated film "Up."

On the TV side, beloved comedy veterans Eugene Levy and Catherine O'Hara chase acting prizes for their CBC sitcom "Schitt's Creek," the leading TV nominee.