Britney Spears is desperately devouring ice chips and chocolate during her second pregnancy and melts huge chocolate bars in the microwave late at night to curb her cravings. The TOXIC singer, who is due next month (SEP06), estimates she has gained 40 pounds (18 kilograms) while pregnant with her second child. She explains, "I'll get up in the middle of the night and I'll get a Hershey's (chocolate) bar, the real big ones, and I'll put it in the microwave and eat it." After having her planned Caesarian section, Spears plans to stick to a low-carb diet to lose the excess weight, once the baby is born.