Mr. Big, Chris Noth, will be back for more 'Sex'

Sarah Jessica Parker Chris Noth

has signed on for the "Sex and the City" movie sequel.

That eases a lot of anxiety among "Sex" fans, who of late have been wondering whether Big would be back. In the movie, Carrie and Big, after much heartache, finally tied the knot.

But just knowing that Big will be back doesn't end the guessing game.

Will Big cheat on Carrie? Will Carrie get pregnant? And what in the world will they be doing in London?

"I don't know anything yet," SJP told E!

"Dancing With the Stars" stud

Gilles Marini Kim Cattrall

's Samantha Jones to oral distraction.

"I don't have a clue," Parker said. "I don't know anything specific about a story for him, but it's very possible."

All four female leads, as well as writer-director

Michael Patrick King