A documentary about US socialite Paris Hilton has had its premiere at the Toronto Film Festival.

Director Adria Petty followed the 27-year-old star for a year to make Paris, Not France.

It shows Hilton at work on red carpets, in her business dealings, talking about her image, and relaxing at home.

Petty said: "As soon as I met her, I knew within a minute that she was a cool chick, a smart girl, and hard-working."

Prejudices

She added that Hilton "certainly wasn't lounging on a chaise eating cherries".

"I didn't really go in with too many prejudices against her, but just like everyone else I wondered what she was all about," Petty said.

Hilton posed for photographs and signed autographs before attending the screening at the festival.

Petty said Hilton had "created a mystery about herself that a film like this maybe wouldn't have been a great thing for her in the past".

"But now, she's been so saturated in the media. We're so used to her. To see a new side of her is so exciting," she added.