Having been together since Sex and the City first debuted on HBO in 1998, one might think the hit franchise's cast would be growing tired of each other. But that was far from the case when Sarah Jessica Parker, Cynthia Nixon, Kristin Davis and Kim Cattrall gathered to shoot their upcoming movie sequel.

"We've never laughed harder or talked more or spent more time together," the 44-year-old Parker told People Thursday at the ongoing ShoWest convention in Las Vegas.

One of the biggest laughs during filming came when the stars hopped aboard some camels.

"The camels were beautifully trained," explained Parker, who shared a seat with Cattrall. "Cynthia and Kristin were on one camel and they had the most grumpy, ornery camel. Ours was so sweet, but then out of nowhere our camel would sit. You have to understand, it's not like a bike and the bike fell over. It's a camel, and the camel would just sit. And when they sit, it's a little like an earthquake. We laughed so hard."

"That was the most exotic, beautiful thing we did," added Nixon.

With anticipation building for the sequel, Parker said she's optimistic all the laughs were put to good use.

"We hope we made a movie that lives up to expectations," she said.