Pregnant Chelsea Houska Flaunts Tiny Legs In Skintight Spandex While 'Halfway' There

ChelseaHouska/Instagram

Chelsea Houska is being told she's "so tiny," despite celebrating the "halfway" point of her pregnancy. The "Teen Mom 2" star, 29, is well into expecting her fourth child – Chelsea is already a mom to 11-year-old daughter Aubree, 3-year-old son Watson, and 2-year-old girl Layne. Chelsea updated her Instagram over the weekend to update fans on her bump progress. The MTV face had gone skintight in a maternity pair of high-waisted leggings, with the blossoming bump shown off. Check it out below.

ChelseaHouska/Instagram

Scroll for the latest selfie. The above photo dates back to August 6, when Chelsea debuted the bump and wrote: "Hiiii little babe." The Itzy Ritzy collaborator, who announced her pregnancy shortly after co-star Kailyn Lowry welcomed her fourth boy, has been making headlines non-stop as fans watch her become a mom of four.

Yesterday's photo came as the standard selfie. It showed Chelsea flaunting her bump while wearing a shredded tan hoodie and yoga pants, with a slight smile accompanying a pumped caption.

ChelseaHouska/Instagram

Keep scrolling for more photos. Chelsea, who is welcoming her fourth baby with 2016-married husband Cole DeBoer, wrote:

"Almost half way there baby girl ??."

Over half a million likes have been left to the snap – with 5.8 million followers and a fanbase up 100,000 since her pregnancy announcement, Chelsea is by far the most-followed "Teen Mom" cast member.

A comment quickly came in from Kailyn Lowry's podcast co-host Lindsie Chrisley – "So tiny," she wrote, with over 270 users agreeing. "This is what I look like not pregnant ?," another fan jokingly wrote.

ChelseaHouska/Instagram

Chelsea, who had sparked rumors ahead of her official announcement, has been opening up on the world knowing she's knocked up. August saw the Profile Sanford face say her bump was already budding, adding:

“It still feels crazy that everybody knows. I was so afraid that I was going to say something because I am such a bad liar and not good at hiding things so I haven’t been on social media. But I am so excited to share this whole process with you.”

ChelseaHouska/Instagram

Chelsea didn't opt for the standard sonogram picture to confirm she's expecting. Instead, the South Dakota-based star posted a simple wooden doorway panel with her household's names on it.

"Cole, Chelsea, Aubree, Watson, Layne," Chelsea wrote, then adding "Baby" with a hear emoji as she confirmed "another" DeBoer was due in early 2021. Chelsea's youngest two are shared with hunky husband Cole. The star's pre-teen daughter Aubree was welcomed back when she was a teenager with ex-boyfriend Adam Lind. Shortly after announcing the pregnancy, Chelsea shared her gender reveal party – it's another girl for her.