Teen Mom 3's Mackenzie Douthit Shows Off Flat Post-Baby Stomach Just Two Weeks After Giving Birth!

Mackenzie Douthit shows off her flat stomach just two weeks after giving birth to daughter Jaxie. Credit: Courtesy Mackenzie Douthit

What baby bump? Just two weeks after she welcomed daughter Jaxie Taylor McKee, Teen Mom 3's Mackenzie Douthit is back to her flat tummy -- no workout necessary. 

"Two weeks later," she captioned the shocking before and after photo. "All my muscle is gone; (. But dr said I could starting working out again today; ). Woo. Time to get my six pack back." 

The 19-year-old cheerleader has plenty of experience fending off pregnancy weight. The Miami, Oklahoma native welcomed son Gannon with now-husband Josh McKee in September 2011, which was covered on season 4 of MTV's 16 and Pregnant.

Douthit and McKee went on to star in the MTV spin-off, Teen Mom 3, which was cancelled after only one season. 

But six packs are certainly not the only thing on Douthit's mind. The overjoyed mom shared a precious photo of her sleeping newborn Jaxie on Valentine's Day, surrounded by a pink fuzzy blanket and wearing a giant pink flower on her head.

"[Our] little valentine," she captioned the pic.