Lady Gaga catapults onto our list, ranking ahead of much more established pop stars like Madonna (No. 10) and U2 (No. 7). She has a 106-date world tour and her willingness to partner with corporations like Virgin Mobile and Polaroid to thank for an estimated $62 million in earnings. What's more, her fame and theatricality have brought her gobs of press coverage, while her music videos have made her something of an Internet sensation. Proof: The fashion-forward rocker ranks first for social media and Web presence among the Forbes Celebrity 100.
Gaga is also the list's top-ranked newcomer, leading a group that includes the Black Eyed Peas ($48 million), O'Brien ($38 million) and Twilight costars Pattinson and Stewart. Pattinson comes in at No. 50 with estimated earnings of $17 million, while Stewart, who is working on fewer non-Twilight projects, comes in at No. 66 with a $12 million haul.
Rounding out the list's top five: golfer Tiger Woods. Despite personal and professional setbacks this year (all negative publicity was extracted from this year's list), the tabloid target still managed to earn $105 million between June 2009 and June 2010. The reality: While his revenue streams have diminished post-scandal (Accenture, AT&T and Pepsi have all dropped Woods as a spokesman), he continues to generate millions from deals with Nike, Electronic Arts and Upper Deck. His golf course design business is also struggling due to the troubled global economy.
Expect to see Woods' income take a sizable dip on next year's list, a byproduct of his tarnished image and the reality of celebrity earnings at large.
Dependent on new deals and fickle fans, the stars and their incomes have a tendency to fluctuate from one year's list to the next. Among this year's drop-offs is Will Smith. After ranking 11th on last year's list with $45 million, the blockbuster king fell off this year because he had no new films in the works during the time frame we analyzed.
Also absent from this year's list is rapper 50 Cent. In 2009 he ranked 50th with an impressive $20 million income. But his last album, Before I Self Destruct, sold barely 500,000 copies and he has been out of the limelight while losing 25% of his body weight to play a cancer patient in the upcoming film Things Fall Apart.
The Celebrity 100 is a measure of power based on money and fame. Earnings estimates, which include income from films, television shows, endorsements, books and other entertainment ventures, are calculated between June 2009 and June 2010. Figures were rounded off where appropriate. Additional sources include Billboard, Pollstar, Adams Media Research, The Nielsen Company and SNL Kagan. Fame is calculated using Web hits on Google ( GOOG - news - people ) Blog Search, TV/radio mentions on LexisNexis, overall press mentions on Factiva and the number of times a celebrity's image appeared on the cover of 25 consumer magazines. Social rank is calculated using metrics like Facebook friends and fans as well as Twitter followers.