NICOLE Richie will have to go on a serious diet after she gives birth - shes chowing down burgers throughout her pregnancy The Simple Life star - who is expecting her second child with Joel Madden - has been craving hamburgers from Southern Californias In-N-Out chain. Its not so much the craziness of the craving, its just when she craves it - its usually about two or three in the morning, and thats on me, Madden, 30, told People magazine. Im the one that has to run out - either go make her a sandwich or go to In-N-Out or whatever she wants at any given time. Its not unheard of stuff she wants, its just that when she wants it is inconvenient for me. Joel - who raises 18-month-old daughter Harlow Winter Kate with Nicole said, Were very, very blessed. Weve already had one healthy kid, and thats all you can ask for as a parent, healthy kids, he said. This is going great. SS