VIDEO : Bristol Palin Will Join MTV's ?Teen Mom OG?

TMZ reports Bristol will be joining the cast of ?Teen Mom OG? next season? likely to replace Farrah Abraham, who was recently fired from the show. Bristol, no stranger to reality TV, will star alongside Amber Portwood, McKenzie McKee, Maci Bookout and Catelynn Lowell. Palin became a teen mom in 2008 when she welcomed son Tripp with then boyfriend Levi Johnston. The 27-year-old famously competed on ?Dancing with the Stars,? and gave fans a peek into her personal life on ?Sarah Palin?s Alaska? and ?Bristol Palin: Life?s a Tripp.?