Maci Bookout is best known for documenting her struggles as a young mother on the MTV series Teen Mom, but the 19-year-old has also taken some time for herself -- by getting a boob job, Life & Style can exclusively reveal.

"Maci did have breast-enlargement surgery," a friend of Maci's confirms to Life & Style.

The reality star, who appears to have gone from an A-cup to a C-cup, is determined to stay noticed these days. Not only is she publicly rallying around her troubled co-star and friend Amber Portwood -- "Everyone follow @WeSupportAmber," Maci recently tweeted -- she has also hired a Hollywood agent and plans to write a book. The topic? Being a teen mother, of course.

Photo Credit: Startraks