Teen Mom OG cast members Catelynn Lowell and Tyler Baltierra have gotten married at Castle Farms in Charlevoix, Mich. People magazine said their fellow reality TV personalities Amber Portwood and Maci Bookout also attended the "Teen Mom OG" star's ceremony on Saturday. Bookout posted on Instagram a photo of herself with Portwood all dressed up for the happy event. The image was captioned: "With my lady @realamberlportwood__ celebrating cate & tyler's wedding! lets do this." The newlyweds have appeared on MTV's "Teen Mom OG" and "16 and Pregnant" since 2009. The young couple put their daughter Carly up for adoption several years ago and welcomed a second -- Novalee Reign -- in January.