Jennifer Hudson has "no idea" when it comes to clothes

Jennifer Hudson has revealed she's clueless when it comes to fashion.

The singer-and-actress -- who's currently starring in Sex and the City: The Movie -- said that despite having a role in the fashion-conscious flick, she's not all that into clothes.

She says, "I have never been label-crazy. But I wouldn't do a knock-off. In a recent interview they asked me what was I wearing. And I said, 'I have no idea.'

"To be honest, I don't like any shoes. And I can't stand heels. I don't know what are the highest heels I ever had. And I won't last in them too long, at all."

The Oscar-winner -- who shot to fame after she auditioned for the third season of American Idol -- plays Carrie Bradshaw's [Sarah Jessica Parker] personal assistant in the movie adaptation of the HBO TV smash.

In the film, which is released in the US on May 30, Parker dons 80 different outfits, but Hudson's less glamorous character didn't have the same high fashion privileges.

Hudson, who admits she hadn't even watched the 'Sex and the City' TV series before she landed the part in the film, practiced for her role by swapping jobs with her real-life PA.

Adds Hudson, "I'm not that organized, and I can't work a computer at all. But I did switch roles with my assistant to get the feel of it. I don't think I did too good a job."