Angelina Jolie and Brad Pitt have built a large family, and despite the rumors, it's not likely to get too much bigger – as the actress is concerned about having enough time for each child as they grow up.

Asked if she and Pitt want a seventh child, Jolie, 35, tells Vanity Fair: "We're not opposed to it. But we want to make sure we can give everybody special time."

It's easy when they're small, she says, and don't require much emotional support. But as they get older, "they're going to need a lot more talking in the middle of the night, like I did with my mom for hours. We want to make sure we don't build a family so big that we don't have absolutely enough time to raise them each really.

The children's personalities are all blooming, Jolie says – particularly Shiloh, who turned 4 last month and seems to be taking her cues from big brothers Maddox and Pax. "She likes to dress like a boy. She wants to be a boy," Jolie says. "So, we had to cut her hair. She likes to wear boys' everything. She thinks she's one of the brothers."

Among the other kids, Maddox is the intellectual, while Zahara has "an extraordinary voice and is just so elegant and well spoken." And the twins, Knox and Vivienne, who will turn 2 next month, "are classic boy and girl," Jolie says. "She's really female. And he's really a little dude."

While family has clearly become Jolie's top priority, acting has become a secondary pursuit – one she might give up entirely in the not-too-distant future. "I don't think I'll do it much longer," she says. "Because I have a happy home. ... I got back from work last night, and everybody was playing music and dancing, and I suddenly found myself dancing around with a bunch of little fun crazy people."

And what about finally getting married to Pitt, 46, her longtime partner? Also not an issue on the front burner. They're not against it, Jolie says, but "it's just like we already are. Children are clearly a commitment, a bigger commitment [than marriage]. It's for life."