01:00 — The "Teen Mom 2" star is fighting back against criticism she received for her 8-year-old's birthday party.
01:16 — Isn’t the first time, definitely won’t be the last time.
01:19 — Kailyn gets angry when she learns that Jordan has ditched her for another girl.
01:57 — Chelsea's mom provides tips on potty training.
02:01 — Chelsea and her friends meet Dierks Bentley.
01:19 — Kailyn and Jo work out their new custody arrangement on good terms.
04:09 — Here's what happened on episode 5 of 'Teen Mom 2.'
01:43 — The terrible twos come early as Kailyn tries to feed Issac dinner.
02:32 — Jenelle takes Jace on a pirate adventure at Myrtle Beach.
02:06 — Leah finds out if she's been accepted to the University Of Charleston.
02:20 — Chelsea tours a potential beauty school.
01:40 — Chelsea's break up with Adam catches up to her on the morning of her GED.
01:46 — Chelsea goes to therapy to talk out her issues.
01:44 — Kailyn gets emotional when she learns about Jo's new relationship.
04:25 — Here's what happened on episode 7 of 'Teen Mom 2.'
01:01 — Jenelle celebrates Jace's 2nd birthday.
02:05 — Leah goes on a first date with her new Facebook friend, Jeremy.
04:48 — Here's what happened on episode 4 of 'Teen Mom 2.'
01:59 — Jenelle and her mom get into a big fight about Barb refusing to bail her daughter out of jail.
04:37 — Here's what happened on episode 6 of 'Teen Mom 2'
01:57 — Leah and Corey have a serious talk about their relationship.
01:34 — Jenelle feels the effects of being off her meds, and new friend Josh tries to calm her down.
01:56 — Jenelle tours her mother around Josh's mom's house.
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A lot has changed in 20 years.