Teen Mom Leah Messer, 'Teen Mom 2' star, welcomes her third child into the world 02/06/2013 Leah Messer has given birth to her third child, another daughter. Read More RELATED NEWS 'Teen Mom 2' star Kailyn Lowry shares update on breast reduction surgery recovery'Teen Mom 2' alum Kailyn Lowry introduces her newborn twins'Teen Mom 2' alum Chelsea Houska lands HGTV series with husband Cole DeBoer TAGS: Teen Mom Leah Messer