Then And Now: See The Original 'Teen Mom' Cast Members Reunite

After several years, Maci, Catelynn, Amber and Farrah came together for a very special MTV photo shoot.

Since 2009, Maci, Amber, Catelynn and Farrah have shared their personal odysseys from being timid pregnant teens to mature teen moms. While all of the young mothers' tales are uniquely separate -- they reside in four different states -- there have been special occasions through the years when their lives intertwined and they spent quality time together.

MTV/Ashley McCollum

The four pioneers of the groundbreaking "16 and Pregnant" docu-series -- who will make their return to the network on Monday, March 23 -- came together in the Big Apple yesterday (February 25) for a photo shoot, featured above. Leah's mama, for one, took to Twitter to gush about reuniting with her fellow MTV girls:

A lot has changed since the group has been in the same room: Catelynn and fiancé Tyler have welcomed their bundle of joy Novalee Reign, Amber is relishing her freedom from prison and is now sober, Maci is expecting a mini-me with boyfriend Taylor, and Farrah has started her life over again in Austin with daughter Sophia. And that's certainly not all, as some sneak peeks and a trailer have indicated...

+ Are you excited for the return of “Teen Mom OG"? Stay with MTV News for more updates, catch the newly released teaser below and be sure to watch the very first episode on Monday, March 23 at 10/9c!