The artist who painted the Bill Clinton portrait that hangs in The Smithsonian's National Portrait Gallery added an easter egg that contains a veiled reference to the president's infamous affair with Monica Lewinsky.
If you look closely at the portrait, you'll notice a dark shadow that appears on the mantel in the Oval Office just behind Bill Clinton's right shoulder.
A portrait of former President William Jefferson Clinton by artist Nelson Shanks is seen at the Smithsonian Institution's National Portrait Gallery on Monday, April 24, 2006.
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