Singer Miley Cyrus is at it again - she has posted her topless photograph on photo-sharing website Instagram.

The 21-year-old singer, known for her crazy antics, shared the picture after her concert in Rio de Janeiro Sunday, reports dailymail.co.uk.

The `Hungover` singer covered her modesty by her hands in the picture.

Cyrus was attempting to emulate singer Sky Ferreira, 22, who is known to pose topless as she captioned the image: 'Me as @skyferreira'.

Ferreira has appeared topless on the cover of her debut album `Night Time, My Time` and on the covers of magazines like GQ and Vogue.

However, Cyrus altered the photo quite a bit from its original version adding colourful effects.

The singer was performing in Rio de Janeiro as part of her Bangerz World Tour.