Justin Bieber has posted a cheeky cartoon of himself on Instagram.

The teen idol sent fans' pulses racing worldwide when he uploaded an image of himself lying shirtless in bed, cuddling up to a topless female labelled simply as 'Belieber'.

It isn't known whether the picture, posted on Tuesday (16.04.13), is fan art or whether he created it himself.

Devoted followers of the Canadian singer went wild, posting comments such as, ''That will be me one day, hopefully...'', ''Is dat you Selena [Gomez]'' and ''Omg Justin don't post pics of us in the bed (sic)''.

The racy picture came after Justin shared a series of shirtless 'selfies' on Twitter, showing off his chiselled abs.

Referring to his recent headline-grabbing antics such as trying attacking a paparazzi in London, he sarcastically wrote: ''Breaking news worldwide @justinbieber just posted 2 shirtless pictures he must be going crazy'' and ''Uh oh @justinbieber is losing it taking shirtless pics in the mirror''.

The 19-year-old star has been causing quite a stir recently, after it emerged he left a controversial message in the Anne Frank Museum guest book on Friday (12.04.13).

He wrote in the book, devoted to the hiding place of the Holocaust victim and her family: ''Truly inspiring to be able to come here, Anne was a great girl. Hopefully she would have been a belieber''.