BEYONCE EATING FOR TWO?

BEYONCÉ Knowles still won't confirm her April 4 wedding to Jay-Z, so there was no chance yesterday she'd confirm she's pregnant. But pals of the tight-lipped newlyweds say the songbird is expecting the couple's first child. "She has gained a lot of pregnancy weight," a source said. "When she gains weight, she normally does the Def Jam detox, but not now." A rep for Beyoncé said, "I don't know if she's pregnant. Let me perform an ultrasound and get back to you."