Jenelle Evans treated herself to a mommy makeover ahead of her 34th birthday. "I've been keeping a little secret 👀✨ It feels so good to finally share this with you guys!" the Teen Mom star, 33, wrote via Instagram on Thursday, December 18, alongside a slideshow of her in an underwear set post-surgery. "After 3 pregnancies, work outs, and eating clean my body still needed some extra help especially with diastasis recti (a mom pouch) which a lot of us deal with after we have kids. No amount of exercise fixes this.