Miley Cyrus stunned fans at a gig in Portugal on Saturday night by cavorting onstage in a skin-tight green leotard during a raunchy routine.

The 17-year-old "Hannah Montana" star caused controversy earlier in May when a video of her dirty dancing with a 44-year-old movie producer in a bar surfaced online.

And the teen heroine shows no sign of toning down her saucy antics - she shocked onlookers with her performance at the Rock In Rio event in Lisbon over the weekend when she almost spilled out of her eye-popping outfit.

The singer/actress donned an olive-green leotard, skimpy leather jacket, and high-heeled shoes for the show, launching into a racy routine during which she stroked her thighs and frolicked with her hunky male dancers.

Photographs of the gig showed Cyrus grinning with delight at the reaction of her fans - before backing away and standing towards the rear of the stage after her outfit threatened to slip.

It's not the first time Cyrus' live performances have caused controversy - during her recent appearance on "Dancing With The Stars," she wore a flesh-flashing black leather outfit with knee-length boots, and began singing from inside a cage.

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