Credit: Courtesy of Glamour

One person with mixed feelings about the hotly anticipated Sex and the City sequel? Its leading lady.

Sarah Jessica Parker wishes she thought twice before filming the franchise's second feature film after the arrival of her surrogate-born twin daughters, Marion and Tabitha, who are now four months old.

"It’s been amazing but complicated because of my current work schedule, which I have enormous regrets about," the actress, 44, tells the January issue of Glamour. "One would prefer to be held 24 hours a day, and the other is already suffering from type A issues."

Still, the Did You Hear About the Morgans? star says she's "not complaining" about the balancing act.

"It is the eternal conflict of every working woman," she says. "I’ve done this to myself. And I have a wonderful, wonderful nanny who allows me to be a working person. The great challenge for me is to be all things to all people; I want to be a great mother, and I want to feel good when I’m at work. But it is hard."

She admits she didn't realize how hard it would be to begin filming SATC only two months after her twins' June birth.

"Nothing can really describe what it’s like to have two new little girls," she says. "It’s been very different than when James arrived, since our family expanded in an untraditional way. We didn’t plan on having two, but were doubly blessed, and it’s been just wonderful."

Nonetheless, the star insists that sequel will be a "romp" compared to the serious subject lines of the first one.

The first movie had a lot of sadness in it, and it was very brave about breaking the rules of romantic comedy. This one is very much the antidote for that," she tells Glamour. "It’s about the idea of women's and men's roles in marriage, and old traditions versus new ones. The story is really fun."