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"It&amp;apos;s hard to imagine that Kate Middleton can walk among the commoners unnoticed these days -- but that&amp;apos;s exactly what the Duchess did when she visited the National Portrait Gallery in London Wednesday.\r\n\r\nThe 29-year-old spent the afternoon touring the contemporary collection downstairs with a small group of curators, an onlooker tells Us Weekly exclusively.\r\n&amp;quot;She was dressed all in black -- she must have been boiling because it was a really hot day in London -- in knee-length black boots, black tights and a slim-fitting black dress,&amp;quot; the onlooker says. &amp;quot;She had her hair up, completely pulled up into a twist at the back.&amp;quot;\r\n\r\nMiddleton, who studied art history at St. Andrews (where she met future hubby Prince William, 29), wasn&amp;apos;t fazed by some of the more controversial pieces, including Marc Quinn&amp;apos;s Self, a self-portrait cast of the artist&amp;apos;s head made from his own blood and then frozen.\r\n&amp;quot;She was asking lots of questions and talking to the experts at length about the piece,&amp;quot; the onlooker tells Us. &amp;quot;She seemed completely fascinated by it.&amp;quot;\r\n\r\nBecause the gallery downstairs is split into many side rooms, Middleton was able to move around without too many people noticing her -- though one tourist did attempt to snap a photo of the Duchess. &amp;quot;Her security guard suddenly appeared and told the man he should delete the photo, but other than that she wasn&amp;apos;t bothered at all.&amp;quot;\r\nMiddleton -- who has broken tradition by not posing for her own post-wedding portrait -- viewed a portrait of William and Prince Harry, 27, on her way out.\r\n\r\n&amp;quot;She didn&amp;apos;t spend a huge amount of time looking at it,&amp;quot; the onlooker notes. &amp;quot;She just smiled and admired it briefly.&amp;quot;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.usmagazine.com/celebrity-news/news/kate-middleton-visits-national-portrait-gallery-2011299>