Willow Smith ran around the stage and gave a good performance of her new song, "Fireball," on last night's episode of The X Factor. She's a scrawny little thing, but she has plenty of energy and good stage presence. Willow's studio version of "Fireball" features Nicki Minaj. Nicki and Willow were spotted filming their music video together just last weekend. Check out Will Smith's mini-me in action. She's pretty good for being a very young, new performer.