Pippa Middleton pictured at lavish Paris fancy dress party hours before 'gun incident' More than 300 guests attended the Friday night party, entitled "Le Roi est Mort, Vive le Vicomte," which translate as "The king is dead, long live the Vicomte," including the "cream" of French, English, American and Latin American society. Hundreds of pictures have since been posted online, showing guests dressed in revealing period costume outfits while also appearing to be enjoying the host's hospitality. Others were pictured cavorting with dwarves in dimly lit rooms while also being draped with red velvet curtains. The festivities, held at the Theatre Saint Germain, central Paris into the early hours, culminated in a woman bursting from a huge fake birthday cake to a remix of God Save the Queen. Users have since posted a series of comments on the pictures, including one that commended the host's "delusions of grandeur." Miss Middleton was being driven in an Audi convertible to Paris's Gare du Nord station to board a Eurostar train to London when the incident happened just after 2pm on Saturday. Detectives have reportedly since received a complaint from a member of the public who saw the driver pointing the gun at a photographer taking the pictures in Paris. France has strict gun laws and is on a heightened security alert after an Islamic terrorist, Mohammed Merah, used a .45 calibre Colt pistol to murder seven people in the south west of the country last month. As a freelance photographer took pictures from behind the car, the unnamed driver produced what appeared to be a semi-automatic pistol and closed one eye as he stared down the barrel at the photographer. Under French law, anyone who "threatens" another with a real or fake weapon can face a prison sentence of five years. Mr De Soultrait was said by friends to be "mortified" by the incident with the gun, while the man handling the weapon was said to be "keeping a low profile." It remains unclear if it was real or fake.