Summary: Between her showy jewelry and her flashy outfits, the 24-year-old tennis phenom keeps tennis interesting. And as if her seven Grand Slam titles weren't enough, Venus' younger sister has a clothing line, a book and the beginning of an acting career to keep her occupied.

Summary: She was booed during her halftime show at the Orange Bowl and caught lip-synching on Saturday Night Live. It wasn't the best of years for Jessica Jr., also known as Ashlee Simpson. But even with all of the bad, Simpson was able to follow up her chart-topping Autobiography album with another record and a movie, Undiscovered

Summary: Practice makes perfect--or at least it makes $18 million and a Wimbledon title. Undeniably the "It" girl of tennis, the 6-foot-tall blonde is the world's best-compensated female athlete.

Summary: While it's been mostly smooth sailing for James, its been a pretty turbulent year for Mary-Kate and Ashley Olsen. The darling duo underwent a high-profile split with their manager, and Mary-Kate had a public struggle with an eating disorder before abruptly departing New York University. But despite the drama--and no new movies since 2004--the twins manage to keep their pocketbooks padded with royalties and income from their own production company and retail outfit. In all, the various ventures added up to $21 million for the Olsens.

Summary: Earnings: $8 million $9.3 million Canadian 4.5 million pounds $10.7 million Australian 354.7 million rupees Next up for young master Muniz: Stay Alive, a horror film scheduled to hit theaters later this year. And if the flick's a flop, no worries; the star always has his hit sitcom, Malcolm in the Middle, to fall back on.

Summary: The redhead-turned-blonde (and then brunette) has certainly given the tabloids something to talk about this year. But despite her battles with bulimia, booze, boys and drugs, the Herbie: Fully Loaded star is doing fine at the bank.

Summary: And then there are the young and beautiful. Looks alone have done it for Brazilian supermodel Adriana Lima. With a pretty face--and a body to match--the leggy brunette has cat-walked her way into deals with Victoria's Secret , Maybelline and Telecom Italia Mobile . It all added up to $4.5 million for the 24-year-old stunner.

Summary: Take 21-year-old NBA phenom LeBron James. In less than three seasons in the league, the Cleveland Cavaliers' forward, who skipped college to go pro in 2003, has proved himself to be one of the league's premier players. Thanks to his remarkable stats and a laundry list of endorsements, which include Nike (nyse: NKE - news - people ), Upper Deck and Coca Cola (nyse: KO - news - people ), the 6-foot-8 All-Star earned some $23 million. And he may do even better--and move to another team--when he renews his contract next

Summary: Then there are the celebrities who cash in on being, well, celebrities. Case in point: Paris Hilton. Daddy isn't the only one making the big bucks anymore; the dippy heiress pulled in $6.5 million, mostly for just being herself. The 24-year-old makes headlines for her flashy wardrobe, exotic--nay, illegal--pets and high-profile feuds. But she makes her money as a "reality"-TV star and best-selling author, as well as by plugging her perfume. And that's when she's not making appearances at the trendiest nightclubs (oh yes, this diva gets paid to party)

Summary: Long gone is little Lizzie McGuire. The once-girlish figure has transformed into a super-thin and stylish star nearly overnight. Singing, acting and plugging her clothing and cosmetic line, Duff continues to wow the tween market.

Summary: A recent high school grad, Bynes continues to entertain fans as 16-year-old Holly on her WB prime-time sitcom, What I Like About You. With several movies behind her and at least one more, She's the Man, under way, the slender star is certainly one to