'Teen Mom': Then & Now
Cast ("Teen Mom" Season 4)
For four seasons the MTV reality show "Teen Mom" has followed the trials and tribulations of young mothers. As the series draws to a close this week, here's a look at the stars of the show then and now, as well as updates on the cast of "Teen Mom 2," which wrapped up Season 2 on February 14, 2012. A third season has yet to be announced.