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More than 2,000 postcards have been donated by artists to this year's Royal College of Art Secret exhibition and sale.

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The postcards will be sold for �35 each and all the money raised will go to the Royal College of Art Fine Art Student Award Fund.

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The identity of the artist remains unknown until the piece of work is bought and the signature is revealed on the back.

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They include original artworks by some of the world's leading contemporary artists such as Damien Hirst, Tracey Emin and Julian Opie.

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Fashion designers Hussein Chalayan, Zandra Rhodes and Manolo Blahnik have also contributed.

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Some of the contributing artists are students or recent graduates of the Royal College of Art and other leading art colleges.

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Art lovers have been known to queue for days to secure their favourite postcard.

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The exhibition opens for viewing at the Royal College of Art on 19 November. The sale takes place on the 26-27 November.