No. 1: Jennifer Lopez. Calling her a "state-of-the-art success story," Forbes placed J.Lo in the top spot on their Celebrity 100 list for the first time. The magazine cited the singer/actress/designer's enormous success over the past 12 months -- re-launching her floundering career by co-hosting "American Idol," having a clothing line with Kohl's and earning $52 million. (FOX)