IN TODAY'S movie universe, a teenage girl with a gun crushes Sean Penn with a gun.

In fact, a teenage girl doing practically anything crushes Sean Penn with a gun.

Star Shailene Woodley and the second installment in the "Divergent" series, "Insurgent," easily topped the box office with $54 million, according to Rentrak estimates yesterday. Penn's "The Gunman" stumbled with only $5 million.

According to "Insurgent" distributor Lionsgate, 60 percent of its audiences were female.

Rentrak's senior media analyst, Paul Dergarabedian, credits Lionsgate's consistent release-date strategy and impressive marketing campaign for the strong repeat performance.

"It's really about driving a very fickle audience, that teen, YA - whatever you want to call them - they're really tough to get a handle on," he said. "Their tastes change like the wind. The key is keeping the young-adult audience engaged, excited and enthusiastic."

Not sure how a group that reads the same book over and over again can be considered fickle, but whatever.

"Insurgent" also performed well overseas, taking in $47 million from 76 markets, bringing its worldwide total to $101 million.

Disney's live-action "Cinderella," meanwhile, slippered 49 percent in Week 2 to take second place with $34.5 million. The PG-rated film has earned an impressive $122 million domestically to date.

Also in its second weekend in theaters, the R-rated Liam Neeson-led action film "Run All Night" managed a slight edge over "The Gunman." Neeson's film dropped 54 percent with its $5.1 million weekend.

"Kingsman: The Secret Service," one of the better-performing R-rated releases in recent weeks, rounded out the top five with $4.6 million in its sixth weekend in theaters. The film has now earned more than $114.6 million domestically.

"Over the past couple of weeks, films driven by the female audience have done much better than films driven by the male audience," Dergarabedian said. "But that's all going to change because 'Furious 7' is on the way.

"Put on your seatbelt and get ready, because it's going to be an incredible ride in the coming weeks," he said.

TATTBITS

* In dropping out of the Republican Party last week, media pitchman Glenn Beck sent a scathing letter to Karl Rove, saying, in part, "You guys have the spine of a worm, the ethics of whores and the integrity of pirates. (My apologies to worms, whores and pirates.)"

Finally, someone with a little respect for worms, whores and pirates.

* Hey guys, Billboard is reporting that Eleanor Calder is single again.

Who is Eleanor?

She's the former GF of Louis Tomlinson, who sings in a little group called One Direction.

Guess he's single, too, if anyone cares.

* Aceshowbiz.com says that Miley Cyrus has been ignoring BF Patrick Schwarzenegger's calls since he was pictured cavorting with bikini babes, including his ex-GF, during his spring break in Cabo.

"He's very upset and is doing everything he can to try and resolve things," said an unnamed source.

"Patrick is extremely frustrated because he's been actively trying to be very good and to make this relationship work," the source said. "The media has made this seem like he's been sketchy and a bad guy when he really did nothing."

* The Huffington Post says that Taylor Swift's team has purchased the soon-to-be-available Internet domain names taylorswift.porn and taylorswift.adult to avoid any mix-ups with Internet trolls and the sex trade.

Swift has shown herself to be a savvy trademarker of many things Taylor, but how far could her control go?

Would she be able to stop a porn babe from naming herself Taylors Wift? Or Taylor Zwift?

Or Taylor Spliff - the porn star who works in a head shop?

What about the male porn star Swift Taylor - he's so fast, he can film a money shot and leave change.

- Daily News wire services

contributed to this report.

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