Forgive us the pun, but <b><a href="http://www.selfridges.com/GB/en/cat/roger-vivier/" style="text-decoration: none"><font color="black">Roger Vivier</font></a></b>&#39;s ballerina flats are set to be the jewel in your collection. Really. If you&#39;ve been wondering whether to dip into the French label&#39;s elegant edit, this oil-slick patent pair is the ideal point of entry. As smooth as a mirror and lined in pocked metallic-leather, &nbsp;they&#39;re finished with a crystalline butterfly, giving some hint of the carefree spirit you&#39;ll feel when you slip them on.