LOS ANGELES - Maybe nice guys finish last, but "Mean Girls" came in first at the weekend box office.

The comedy starring Lindsay Lohan as a student who gets swept up in the backstabbing politics of fashion, love and popularity among high school cliques earned $25 million, according to studio estimates Sunday.

Although it starred 17-year-old Lohan, the presence of "Saturday Night Live" star Tina Fey, who also wrote the screenplay, appealed to grown-up moviegoers. Overall, "Mean Girls" got its strength from girl power.

About 75 percent of the audience was female and about half the audience was under 18, said Wayne Lewellen, head of distribution for Paramount, which released the movie.

Two of last week's top movies continued to perform strongly. The Denzel Washington thriller "Man on Fire" fell to No. 2 in its second week with $15.2 million, and "13 Going on 30," which starred "Alias" TV actress Jennifer Garner as a child in an adult body, ranked third with $10 million.

1. "Mean Girls," $25 million.

2. "Man on Fire," $15.2 million.

3. "13 Going on 30," $10 million.

4. "Laws of Attraction," $7 million.

5. "Godsend," $6.9 million.

6. "Envy," $6.1 million.

7. "Kill Bill - Vol. 2," $5.8 million.

8. "The Punisher," $3.4 million.

9. "Home on the Range," $2.2 million.

10. "Scooby-Doo 2: Monsters Unleashed," $2.1 million.