It didn't take Lopez long to sign on to The Back-Up Plan (out Jan. 22), about a woman who meets the man of her dreams (Moonlight's Alex O'Loughlin) soon after she gets artificially inseminated. Name Brands "I responded to [the script] immedi¬ately," says the actress, who relished the chance to show "all the things that are real about being pregnant." Luckily, the mother of 1-year-old twins came prepped for the role. "A major part of the movie is going through a pregnancy," says Lopez. "Obviously that helps me, having so recently been through it myself." -KW Speakers