In the clip, we see Amber Portwood looking happier and healthier than we've ever seen her before. For starters, she's engaged! And, as she says in the clip, she's sober. It isn't all happy, though, it looks like Amber and her ex, Gary, are gearing up for a custody battle.
As for Catelynn Lowell and Tyler Baltierra, they just had their little girl and are gearing up for their wedding day, which was filmed for the show. It's also kind of cool to see their fellow Teen Mom stars Kailyn Lowry, Maci Bookout and Amber Portwood in the audience.
Check out the clip to catch up with Farrah Abraham and Maci Bookout.
**The new season of Teen Mom OG premieres Monday, January 4 on MTV**
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Gallery | Teen Mom: Original Girls