[O] add class to *figure*, not *img*, on html export?

[Matt Price]

in HTML export, the following org text:

#+ATTR_HTML: :class paired
[[file:~/DH/Images/louvre-jean-baptiste-greuze-la-lecture-de-la-bible.jpg]]

exports for me as:

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<figure>
<img src="" alt="louvre-jean-baptiste-greuze-la-lecture-de-la-bible.jpg" class="paired">

</figure>

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Is there a way to get the ~class="paired"~ attached to the *figure* rather than the *img* tag?  Thank you!