The content originally appeared on: CNN A showcase of portraits of queens who have ruled Britain will feature in a month-long program of exhibitions, events and auctions celebrating Queen Elizabeth II's Platinum Jubilee. The London exhibition of portraits loaned from country houses across the United Kingdom will present the likenesses of seven queens, from the larger-than-life Tudors, the dynasty that first brought the art of the image to the fore, through to the present-day royalty, Sotheby's aution house said in […]