There's big news for MARIAH CAREY -- she's pregnant! She and her husband, Nick Cannon, recently confirmed the rumors, and today Ellen is finding out all the details directly from her. Mariah will also talk about her brand new Christmas album. In the last few weeks, WILLOW SMITH became the newest name in music with her hit song, "Whip My Hair." The daughter of Will Smith and Jada Pinkett Smith is making her television debut today when she performs it for Ellen!