Shocking 'Sex and the City' Plot Twist!

"Extra" has been on the set of the upcoming "Sex and the City" movie in the Big Apple for weeks, where we've followed everything from baby bumps to big-time weddings.

We spotted Sarah Jessica Parker in a wedding gown, which set tongues wagging that she was to marry her character's longtime love, Mr. Big!

But is there a shocking plot twist that could blow the lid off of the entire storyline?