Credit: Instagram

If you keep up with MTV's Teen Mom 2 ladies as closely as we do, you may have noticed that the Season 3 reunion footage on Feb. 11 seemed a bit dated. That's because the show was taped almost a year ago in March 2012!

Leah Messer, Kailyn Lowry, Jenelle Evans, and Chelsea Houska hit up New York City back in early March to dish on Season 3 with Dr. Drew Pinksy. And a lot has changed since then!

Nowadays, Leah is happily married to Jeremy Calvert, and they just welcomed a healthy baby girl on Feb. 4. Chelsea is kicking butt in beauty school, and Kailyn is busy being Javi Marroquin's military wife. Can you believe they tied the knot already?! Things have been crazy as usual for Jenelle, who recently split from her hubby Courtland Rogers and suffered a miscarriage in early 2013.

What a difference a year can make!

Are you excited to see their storylines play out in Season 4, premiering on Feb. 18 at 10 p.m. ET on MTV? Tell us your thoughts below!