How to preserve an ampersand (&) while using FOR XML PATH on SQL 2005

SELECT 'http://foosite.com/' + RTRIM(li.imageStore)
        + '/ImageStore.dll?id=' + RTRIM(li.imageID)
        + '&raw=1&rev=' + RTRIM(li.imageVersion) AS imageUrl
FROM ListingImages li
FOR XML PATH ('image'), ROOT ('images'), TYPE

<images>
  <image>
    <imageUrl>http://foosite.com/pics4/ImageStore.dll?id=7E92BA08829F6847&raw=1&rev=0</imageUrl>
  </image>
</images>

<images>
  <image>
    <imageUrl>http://foosite.com/pics4/ImageStore.dll?id=7E92BA08829F6847&raw=1&rev=0</imageUrl>
  </image>
</images>