Bristol Palin joins MTV reality show ‘Teen Mom OG’

Former vice presidential candidate Sarah Palin's daughter is returning to reality TV.

TMZ and Variety report Bristol Palin is joining the cast of MTV's "Teen Mom OG," replacing longtime cast member Farrah Abraham. Palin was 17 when she gave birth to her first child, Tripp, and has since welcomed two more children.

Palin, now 27, was pregnant when her mother, then the governor of Alaska, was named Republican presidential nominee John McCain's running mate in 2008. Tripp, whose father is Levi Johnston, was born shortly after the election; the couple called off their engagement less than six months later.

E! News reports Tripp is now 9 years old; Bristol Palin also has a 2-year-old daughter, Sailor Meyer, and 1-year-old daughter, Atlee Meyer, with her estranged husband Dakota Meyer. The U.S. Marine veteran filed for divorce from Palin in February.

MTV has not confirmed Palin's casting, but current cast member Kailyn Lowry commented on Twitter: "Bristol palin & cheyenne & Cory for teen mom og? Our producers sure know what to do."

"Teen Mom OG" follows Lowry, Catelynn Baltierra, Amber Portwood and Maci Bookout as they navigate life with children after giving birth as teenagers. Abraham, who's stirred controversy with a side career in porn (and a recent arrest), left the show earlier this year after settling a lawsuit.

E! and People report Cheyenne Floyd from MTV's "The Challenge" and former "Teen Mom 3" star Mackenzie McKee are also expected to join the cast of "Teen Mom OG" season 8. "Teen Mom," a spinoff of "16 and Pregnant," was renamed "Teen Mom OG" when it was revived in 2015.

Palin is no stranger to reality TV herself, previously appearing on "Dancing with the Stars" in 2010 and 2012, plus her own Lifetime series "Bristol Palin: Life's a Tripp." She also released a memoir in 2011, titled "Not Afraid of Life: My Journey So Far."