Vanessa Hudgens plays a pregnant and homeless teen in "Gimmie Shelter." (Roadside Attractions)
Vanessa Hudgens plays a pregnant and homeless teen in “Gimmie Shelter.” (Roadside Attractions)

In “Gimme Shelter,” out Friday, Vanessa Hudgens plays a teenager named Apple who has bigger problems than failing trig: She’s pregnant and homeless. She feels alone, but there are plenty of movie teens who find themselves in the family way before they can vote.

Juno MacGuff
Ellen Page incubates throughout 2007’s “Juno,” thanks to her getting knocked up by Michael Cera. She chooses to place the baby up for adoption and powers on through the pregnancy because high school isn’t awkward enough.

In 2004’s hilarious “Saved!,” Jena Malone sleeps with her gay boyfriend because she thinks Jesus told her to. Because He has a twisted sense of humor, she ends up with a bun in the oven and a target on her back, thanks to the popular girls at her Christian high school.

Darcy Bobrucz
Molly Ringwald and Randall Batinkoff star in 1988’s “For Keeps,” which is about two really bright high schoolers who spawn, proving that even smart people can be pretty stupid about using effective birth control.

Britney Spears made her big-screen debut in the 2002 girls-go-across-the-country film “Crossroads,” and who better to bring along on a road trip than a pregnant woman (Taryn Manning)? At least you’ll get to see every bathroom along the way.

Bella Swan
First comes love, then comes marriage, then comes a vampire-human hybrid that tries to kill you from the inside and has to be chewed out of you in the worst C-section ever. That’s the fairy-tale ending in 2011’s “The Twilight Saga: Breaking Dawn Part 1.”