It's time for the Teen Mom OG Season 9 reunion on MTV.

The Teen Moms are dressed up and ready for a new start.

Catelynn explains why she has been upset recently.

Mackenzie tries to come to terms with the arrival of her father.

Amber is shocked on Teen Mom OG Season 9 Episode 22.

Cheyenne is on the phone in this still from Teen Mom OG.

Maci speaks to Catelynn about her pregnancy, but what does she learn?

Tyler talks to his wife, leading to a change in the way they communicate.

This is a still from Teen Mom OG Season 11 Episode 5.

Cheyenne is upset with recent events that involved Cory going off for another season of The Challenge.

Amber is on the phone on Teen Mom OG Season 9 Episode 15.

Tyler listens to Catelynn about what she had to say about everything.