While reprising her role as the normally reserved Charlotte York Goldenblatt in the movie adaptation of "Sex and the City," Kristin Davis had a surprising revelation when watching the finished product for the first time. Not only does Charlotte scream, she screams a lot. Somewhat embarrassed, Davis says, "Like, in the first 30 minutes, I scream like three times!"

Unlike her time on the long-running TV show, Davis also discovered she'd stolen some of the comic thunder from her co-stars.

"You read the script and know, but until you see the thing on the big screen, I was like, 'Oh my God, I'm the comic relief. I'm shocked,'" Davis says.

The bubbly 43-year-old actress says it was a joy to reunite with the three other leading ladies one more time. The "Sex" stars have always had a good time on set, and the movie was no different.

"[Sarah Jessica Parker is] always witty and funny," Davis says. "Cynthia [Nixon] can be very funny in a very dry way. I'm funny like that I'll trip or fall down or something like that. I'm famous on our set for falling down. Kim [Cattrall's] funny more like when she messes up her lines. Her rhythms are funny. She'll crack us up on the set."

Davis was also thrilled to jump into the franchise's stylish wardrobe assembled by designer Patricia Field. She says she lost count of all the fittings because the scope of the production required so many different outfits.

"Usually you have fittings before and then you have your wardrobe set and then you know what's happening," Davis says. Instead, they found themselves waiting anxiously for all the new samples to arrive every week from runway shows in Paris and Italy.

Many of the supporting characters have also returned this time around, including Charlotte's BFF and wedding planner Anthony Marentino, played by the manically outrageous Mario Cantone. With nuptials a key plot point in the film, Davis found she wasn't the only beneficiary of Cantone's Liza or Judy improvs at 3 or 5 a.m. The comedian couldn't help himself and the whole cast became his audience. Director Michael Patrick King would ask him to tone it down, but Davis was the one who quietly reeled him in.

Davis recalls, "I'd say to him, 'Remember the old days when it was just you and me?' Tone it down a little because you're taking over all the space in the room.'"

Yes, she may seem sweet and demure on the outside, but Davis really has a chance to show how tough she is when Charlotte confronts ... oh, but that would be telling.

"Sex and the City" opens nationwide May 30.

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