Credit: MTV

This Thanksgiving, we're grateful for Leah Messer and her healthy twin girls, Ali and Aleeah. And since the holiday falls on #TBT (Throwback Thursday, for all y'all non-computer savvy folk), what better way to celebrate the Teen Mom 2 star than by flashing back to Season 1 of our favorite show?

Back in Season 1, which premiered in January 2011, Leah was still with her baby daddy and ex-hubby, Corey Simms, as they struggled through multiple doctor visits to find out what was wrong with little Ali. To this day, doctors have yet to pinpoint the cause of her developmental delay, but we're thrilled to report that she's happy, healthy, and has even started walking!

And even better news? Leah is happily remarried to the love of her life, Jeremy Calvert, and they're expecting another little one this winter. In other words, there's lots to look forward to in Season 3 and 4 of Teen Mom 2!

Plus, it seems that Leah has recently become acquainted with a straightening iron. She may still be rocking braces, but the 20-year-old mom has come quite a long way since her MTV debut!

Are you surprised how much Leah has changed since Season 1? Tell us your thoughts below!


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