Updated: 19 April 2013 19:45 | By Felicity Thistltehwaite
Celebrity red carpet kisses

Robert Downey Jr

Robert Downey Jr (© REX)
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Robert Downey Jr and his wife Susan put on a very Hollywood display of affection at the Iron Man 3 film premiere in London.

The love birds kissed on the red carpet in front of thousands of fans and the world's press.

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