The gorgeous Jessica Alba tells "Extra" special correspondent Lauren Sanchez that she and husband Cash Warren plan to have more kids, possibly even "three or four!"

Alba also tells Sanchez that her rigorous workout routine lasted about eight weeks and now she depends on her daughter to stay in shape. "[Now] I don't really have time to work out so much anymore," she says. "Running after my daughter and holding her -- she's heavy, so that really helps with the old arm tone."

As for the hardest thing to get used to since becoming a mom, Alba reveals, "Not sleeping. Even if she's sleeping ... I still check if she's breathing. She's fine. She's just sleeping but you still go in and make sure she's fine. Tuck her in three times ..."

"Extra's" interview with Jessica Alba airs tonight. Check your local listings for show times.