Cynthia Nixon let slip a big spoiler for Sex and the City: The Movie according to Digital Spy.
She told the Creation Nation comedy show: “There’s a loss that happens that’s pretty tough. Something significant happens to Carrie, and it really forces her to ask questions that you have to ask about yourself.”
By watching the trailer again, I think that the death is Mr. Big on her wedding day so that explains all those pictures and videos of Carrie losing it on her wedding day. It had nothing doing with Mr Big leaving her at the altar on his accord, but the Grim Reaper’s?