Catelynn Baltierra (née Lowell; born March 12, 1992) is an American reality television personality, author, and public speaker.
From Algonac, Michigan, she received public attention after being cast in the reality television series 16 and Pregnant in 2009, which documented the pregnancies and first months of motherhood for several young women.
Later that year she was cast in the spin-off series Teen Mom, and appeared in each of its four seasons until its conclusion in 2012.
In March 2015, Lowell, along with Maci McKinney, Amber Portwood, and Farrah Abraham, returned to MTV for the fifth season of the show, renamed Teen Mom OG.
Baltierra and now-husband Tyler also appeared on Season 3 of TV Show Couples Therapy.
Lowell and Baltierra released their first book, Conquering Chaos in March, 2015.
In December 2016, the couple's show, Reunited aired on MTV, a show helping people that had been adopted reunite with their birth families, but it was cancelled after just one airing.