Artist Kelvin Okafor draws amazing pencil portraits

Last updated at 16:35
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Check out the amazing pencil art

These portraits look just like photographs - but they were actually drawn in pencil!

Artist Kelvin Okafor has won awards for his drawings which have been described as 'photo realistic' because they look so life-like.

Each one takes about 100 hours to draw.

Could you tell the difference between his Bieber drawing and a real photograph?