1. Jenelle

Nikkole, a fun-loving cheerleader from Monroe, Michigan, gets the shock of a lifetime when finding out she's pregnant with her troublesome, on-again-off-again boyfriend, Josh.

3. Valerie

Adopted in to a family of 11 kids, Valerie is striving to give her baby the family she never had. Confronted with a boyfriend that denies he's the father, she endures a perilous labor and nearly loses her baby.

4. Chelsea

Popular high school senior and Daddy's girl, Chelsea's caught up with her social life and fighting with boyfriend, Adam. She thinks things will get better after giving birth, but instead learns she can choose her daughter above everything.

5. Lori

Lori is a bubbly teen from a small suburban town in northern Kentucky. Her parents adopted her as a child and raised her into a well-rounded young woman. That's why her parents, not to mention her all-girls Catholic high school, were shocked to find out she's pregnant at just 17 years old with boyfriend, Cory.

6. Samantha

Samantha's good girl image becomes less apparent when she finds out she's pregnant with Eric's baby - her boyfriend of two years. To make things more complicated - in Samantha's already cramped house, her mother, Soledad, is pregnant, too.

7. Nicole

Nicole is a 16-year-old prankster from Longwood, FL. Nicole's mom, Tina, stepped up to raise her when Nicole's dad died at age 2 and it's been the two of them ever since. This changes when she meets the energy-filled Tyler and falls head over heels for him. Tyler's only 15-years-old but he needs to grow up soon because Nicole's pregnant with his baby.

8. Leah

Leah is a popular cheerleader from a small town in the mountains of West Virginia and is practically inseparable from her friends. She just started dating Corey, who is two years older than her. Their relationship started out casual but now it's time to get serious because Leah's pregnant... with twins!

9. Lizzie

When Lizzie's pregnancy forces her to drop out of High School and the marching band, she looks to boyfriend Skylar for support...until she discovers he hasn't always been faithful.

10. Kaylin

After discovering that she's pregnant, high school senior Kailyn struggles to reconnect with her parents and improve the relationship with her boyfriend.

11. Life After Labor

All the families from season two of 16 and Pregnant meet to discuss what has changed and gone in their lives since the cameras stopped rolling. The event is hosted by Dr. Drew Pinsky.

12. Brooke

Oct, 2010

Tomboy Brooke spends all her free time tuning up cars and driving on racetracks, but with a baby on the way, she must quickly switch gears. After a shotgun wedding, Brooke and Cody try to balance life as high school students while trying to move into their own place.

13. Felicia

Felicia is the only one in her family who still has the chance to graduate, but when her boyfriend stops supporting her and she moves out of her family home, will she be forced to drop out?

14. Emily

An all-American girl has to hang up her majorette baton after getting pregnant. Moving an hour away from her boyfriend, Emily faces the pressure of starting over in a new school and new town.

15. Markai

Trying to finish her senior year, Markai and her boyfriend James might be kicked out of her house when her disapproving mother has had enough. But will their relationship survive James' infidelity?

16. Aubrey

17-year-old Aubrey tries to get a diploma with a baby, a husband, and no place to live.

17. Christinna

17 -year old Christinna was never a big sports fan, but after moving to Huntsville, Alabama and dating Isiah, the star of the football team, she's gotten used to it. When her mom moved back to New York, Christinna stayed in Alabama planning to go off to college with Isiah, but now everything has changed because Christinna is pregnant.

18. Kayla

Kayla is a southern belle with tons of friends. But now that she's pregnant, this princess must make her own decisions about marriage and making it without the help of her parents.

19. Megan

While her dad is in Afghanistan, Megan gets pregnant and plans to raise the baby in her parents' basement with the help of her video game playing boyfriend, Nathan. With no idea of how to earn a living after she graduates high school, and Nathan not necessarily in for the long haul, pampered Megan has to grow up fast.

20. Unseen Moments

21. Ashley

High school senior Ashley wrestles with the decision to give her baby up for adoption, and must make difficult choices when it comes time to choose what's best for her baby girl.

22. Life After Labor

This issue-driven, host-moderated, forum on teen pregnancy features the '16 and Pregnant' season two families. All nine girls and their children traveled to NYC to participate in this one-day event with host, Dr. Drew.

23. Where Are They Now?

Jan, 2011