Teen Mom Transformations: Your Favorite MTV Stars Then and Now

Chelsea Houska changes her hair as often as we change our undies, but we think the dark reddish waves that she's been sporting most recently look the best on her. But remember...

When she looked like this? While pregnant with Aubree in 2009, Chelsea had bangs, straight brunette locks and definitely not the makeup skills she has now.

Leah Messer, now Calvert, has really grown into herself. She's had three kids and looks amazing! But her hair didn't always look this pretty...

Back when Leah was carrying the twins, her style needed a bit of help. Nothing that a little hair product and color couldn't fix though! She's gorg!

Katie Yeager is the selfie queen who's certainly gotten more put-together since we first met her on 16 & Pregnant...

Here she is while preggers with Molli, still glowing and cute and smiley.

Newly married Kailyn Lowry is now expecting baby number two, but her look has certainly changed since she was first pregnant with Isaac...

Kail now has way better hair and way more tattoos. She made a pretty pregnant lady even back then though!

Maci's a natural redhead, but through the years of motherhood she's had blonde, brown and various shades of red on her strands. She's also gotten her boobs done since we first met her on MTV, but still...

Maci was always a cutie, natural or not. Remember when she looked like this while preggers with Bentley?

Since we first met her on 16 & Pregnant, Jenelle's gotten tattoos, dyed her hair tons of colors, and gotten a boob job. But back then?

Jenelle was just a regular ol' knocked up teen, sporting blonde braids and a huge belly. Good times.

Mackenzie Douthit's pretty anyway you slice it. Here she is most recently, and we can't tell if that glow is from her gorg makeup or pregnancy number two...

Mackenzie was a bit less put-together while pregnant with Gannon, but we can't blame the girl. If we were like like 5 feet tall and carrying a 9 lb 7oz baby, we wouldn't care what we looked like either. Ouch.

Catelynn Lowell hasn't changed too much physically since we first met her and Tyler in '09, but she's now an award-winning advocate against teen pregnancy and pro-adoption. Now she's an example of turning lemons (teen pregnancy) into lemonade...

But even back when she was pregnant with Carly, Cate was always a cutie.

Briana Dejesus is certainly the fashionista amongst the Teen Mom 3 girls, dressing up herself and Nova in only the most stylish things. But was she always like this?

Sure, she always had the style gene in her, but we've gotta say we prefer Bri's current shorter hairdo to the one she had here while pregnant. Do you agree?

Amber Portwood has been a jail for about a year now, so we don't get to see many new pics of her which is a shame. Here's the most recent, where she rocked darker hair and a slimmer physique...

And back in '09 when Amber was pregnant with Leah, she looked very similar to how she does now, mostly because we'd recognize that scowl anytime, anywhere.

Alex Sekella is a beauty, then and now. She hasn't changed much over the years, but still...

Here she is while pregnant with Arabella. See much of a difference? We don't either, and that's not a bad thing.

Farrah Abraham's probably had the most dramatic transformation of all the Teen Mom ladies—she's gotten two boob jobs, a nose job, a lip enhancement, and a chin implant (which she just recently removed). But let's not forget the yelling-at-Debra Farrah Abraham we all know and love...

Farrah was so pretty when she was pregnant with Sophia. Why did she have to go under the knife to make herself look so different? We'll never understand.