Teen Mom stars' transformations through the years

Since MTV's 16 And Pregnant aired its first episode in 2009, we've watched the show's titular cast graduate to Teen Mom and become full-fledged reality TV stars. They've gone from teenagers feuding with their parents to parents feuding with their kids. A lot can change in nearly a decade (especially when plastic surgery comes into play).
Being a teen mom isn't easy, and MTV managed to portray the nittiest, grittiest parts of their struggle. There's no denying these young mamas have been through the ringer — from dealing with mental illness, addiction, and death, to feuding with baby daddies and grappling with a sick kid. Throughout their tenure as MTV royalty, the women of Teen Mom have blossomed both inside and out because of their hardships.
While Jenelle Evans' commitment to controversy has outlasted most of her cast mates' relationships, stars like Catelynn Lowell prove that teenage love can endure and mature as long as you remain committed to bettering yourself. From Amber Portwood's dramatic weight loss to Chelsea Houska's hair journey, MTV has show us that their Teen Moms are a work in progress (and we wouldn't change a thing).