The 29-year-old actress - who is in a relationship with Justin Timberlake - is keen to start a family one day, but it isn`t something she is currently thinking about.
She said: "I`d like to havechildren one day but I don`t have any timetable for that.
"It`s not something I`m thinking about right now."
The `New Year`s Eve` star recently admitted she is in no hurry to get married.
She said: "I was never one of those girls who dreamt of my wedding and my Prince Charming. To p**s off my mom, I used to say, `I`m never having kids, and I`m going to be a fabulously rich old maid living in a house with cute butlers and dogs.` "
Although Jessica refuses to talk about her relationship with Justin, she has insisted actors don`t just date fellow stars for publicity.
She said: "I think those (actors) are the people you meet and so it just kind of happens. Let me tell you: It never happens on purpose."