While Pippa Middleton's famous butt has been her secret weapon up to this point, she may be in big trouble with French authorities for her involvement over the weekend with a real, actual weapon. The Daily Mail is reporting that Pippa was riding shotgun (sorry) in a convertible in Paris, when the driver of the car supposedly whipped out a semi-automatic handgun and started waving it at photographers. A witness reported it to French police. According to the Mail, the incident occurred just hours after Pippa left the 29th birthday of "Paris fashion entrepreneur" Arthur de Soultrait (he's the guy behind Vicomte A) at 6am. While Pippa hasn't been charged with anything yet, a "judicial source" told US Weekly, "If the evidence points to [Pippa Middleton's] involvement, she will be prosecuted."