Did you know that Chelsea Houska, from "16 and Pregnant" and "Teen Mom 2," has four kids now? Aubree, Watson, Layne, and Walker have been keeping her busy.

The 26-year-old reality star died on Jan. 16. ‘Teen Mom OG’s Catelyn Baltierra joins ‘16 and Pregnant’s Abygail to give advice ahead of her episode, airing at 9 p.m. ET/PT on MTV.

Former 'Teen Mom 2' star Chelsea Houska welcomed her first child ... The mom of four made her first MTV debut in 2009 on 16 and Pregnant, where she welcomed her eldest daughter with ex-boyfriend ...