Anna Pavlova in the <i>Butterfly</i> solo (1911, London).
Image retrieved via The Red List (<a rel="nofollow" class="external free" href="http://theredlist.com/media/database/settings/performing-art/ballet-russe/1900-1910/les-sylphides/008-les-sylphides-theredlist.jpg">http://theredlist.com/media/database/settings/performing-art/ballet-russe/1900-1910/les-sylphides/008-les-sylphides-theredlist.jpg</a>)