Royal Collection buys Warhol portraits of queen

Britain's Royal Collection Trust has gone Pop Art with the purchase of four famous Andy Warhol portraits of Queen Elizabeth II.

The colorful screenprints are based on a formal photograph of the queen wearing a tiara and necklace that was used during her Silver Jubilee celebrations in 1977.

They will form part of the Portraits of a Monarch exhibit starting in November at Windsor Castle. The purchase was announced Monday, but royal officials refused to say how much was paid for the portraits...