It’s the most famous LBD in the world. Princess Diana’s iconic “revenge dress” is hitting the auction block for the second time since the late Princess of Wales wore it to a Vanity Fair party in June 1994. It’ll be a standalone offering at Sotheby’s in New York on December 9, with estimates landing between $150,000 and $300,000, per the auction house’s site. The silk Christina Stambolian design features an off-the-shoulder sweetheart neckline and body-hugging draped skirt with a mini train. The royal punctuated her jaw-dropping look with a pearl necklace, red nail polish, black tights and a confident attitude just hours after a documentary…