beards, boobs, and brews the before picture! #chattmudrun #bricksquad

A photo posted by Maci Bookout ?? (@macideshanebookout) on Aug 15, 2015 at 12:34pm PDT

Maci Bookout had baby Jayde Carter three months ago, but you wouldn't know it by looking at her! The Teen Mom OG star, 24, looked trim and fit on Saturday, Aug. 15, participating in a local mud run in Chattanooga, Tenn., with her boyfriend, Taylor McKinney, and a handful of pals. 

"beards, boobs, and brews the before picture! #chattmudrun #bricksquad," the Bulletproof author captioned an Instagram shot of the group looking fresh and ready for action. 

The mother of two wore a tiny black tank top and spandex Nike shorts, which showed off her lean frame. 

beards, boobs, and brews the after picture! #chattmudrun #bricksquad

A photo posted by Maci Bookout ?? (@macideshanebookout) on Aug 15, 2015 at 12:34pm PDT

The reality star didn't hold back when it came time for the mud run. She later shared a second group photo of the crew covered in mud. 

"beards, boobs, and brews the after picture! #chattmudrun #bricksquad," she wrote. 

Bookout and McKinney welcomed their baby girl in late May. She also shares son, Bentley, with her ex Ryan Edwards

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