Minnie Driver has a mini bun in the oven! The curly-haired actress confirmed the baby news in a surprise reveal to Jay Leno last night -- after Jay pointed out her growing tummy. "Are you calling me fat?" she joked.

Minnie, 38, didn't reveal the father's identity. While she said she loves being pregnant -- there's one thing she could do without. "I don't know why they call it morning sickness," she said. "I am sick morning, noon and night, but it's a fair trade-off."

This will be the first child for "The Riches" star, who was previously linked to Josh Brolin (they broke it off in 2001), and more recently to magician Criss Angel.