Miley Cyrus wears Madonna-style corset for Rock in Rio festival

It looks like Miley Cyrus is desperate to put across the message to her fans that she's a grown-up.

The 17-year-old ditched her Disney princess look for a raunchy Madonna-style corset that left little to the imagination as she gyrated her hips and grabbed her crotch during an explosive gig in Lisbon, Portugal, reports The Mirror.

One fan at the Rock in Rio festival said, "Miley seems to have grown up, and fast. It was a ­raunch-fest straight out of the Madonna handbook."

The new look was a far cry from the girl-next-door image on display when she was spotted out with her dog in January.