"We're filming. I can tell you that. I don't want to get sued," Willie Garson, who plays Blatch, said Wednesday in New York at the Vanity Fair party celebrating his new show, White Collar, premiering on USA Friday.
Newcomer Nicholas Rodriguez, who plays a character "crucial" to the scene – though he can't reveal details of his role – confirms to PEOPLE that there will be an extravagant wedding taking place in Connecticut.
"We shot for two weeks. It's a ginormous scene with a huge budget, and everybody is pretty much in it ... all of the girls and their spouses, Willie and Mario [Cantone], and another big surprise cameo, Liza Minnelli," Rodriguez says.
Surprise SerenadeMinnelli, who is a guest at the movie wedding, was so excited to be a part of the film that she serenaded the cast, according to Rodriguez.
"After the shoot, she said, 'I would like to have everyone's attention,' and they pulled out a stool for her at the piano and gave her a mic and she sang a favorite of her mother, Judy Garland. She said, 'Thank you for letting me play with you guys,'" says Rodriguez. "It was so heartfelt and genuine. I got choked up and several people were sobbing like a baby, but I'm not going to name names because he might be really embarrassed."
In true Sex and the City form, stylist Patricia Field has the ladies looking fierce. Rodriguez says their grand entrance in the scene is a "wow factor."
"When Carrie (Sarah Jessica Parker) comes out in the first outfit, you just have to stare at her. She's hot!" he says.
Besides the fabulous fashion, Rodriguez says the cast's chemistry is what makes Sex and the City really tick.
"The ladies have this insane amount of chemistry – not only with each other – but with their spouses as well. Watching Chris Noth and Sarah Jessica work, you're like, 'Oh they flirt just as much off camera as they do on.' They're the same from action to cut as they are from cut to action and it's fun," he concludes.