Pop star Fergie feared she would fall from the stage and career into the crowd during a bizarre acrobatic live performance on a U.s. TV show on Tuesday.

The Black Eyed Peas star shocked viewers by crawling across the stage and writhing in skin-tight leggings while singing Heart's Barracuda, before performing a series of catapults that almost propelled her into the Today Show audience at New York's Rockefeller Plaza.

And the 33-year-old confessed afterwards she had lost control and came close to tumbling from the stage.

She said afterwards, "I should've pointed my toes. My gymnastics coach would've been upset. I just didn't want to fall off I didn't know how much room I had. Thank you for letting me crawl on your floor."