Miley Cyrus, John Mayer and other odd celebrity couples (Ben Stanstall / AFP)

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Height is clearly no issue for this loved-up pair, who married in January 2011 after two years of dating. The statuesque model-turned-author has been with pint-sized crooner Jamie Cullum since 2007, and the couple have often been considered one of Celebland's strangest couplings, thanks to the notable height difference.

They had their first child - daughter Lyra - last year.

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