'Teen Mom' Mackenzie McKee Flaunts Fit Figure Without Double Chin

Scroll for the video. It comes as Mackenzie, who ditched her native Oklahoma last year, builds a new life for herself in Florida, now offering in-person and socially-distanced classes via her Body By Mac brand.

The video, shot outdoors, showed the mom of three with her sister and a male, with everyone posing by a brick wall and in all-black. Mackenzie was showing off one heck of a workout body in tight black leggings and a sports bra, but talk was higher up.

With her hands on her hips and showcasing her rock-hard abs, Mackenzie was heard saying: "And if you bring the chin up, it takes away the double chin." She added: "Here, let's smile" while gesticulating at her own chin and yanking it upwards.

A caption, meanwhile, shouted out family as McKee opened: "Just some behind the scenes 😂😂😂. These two are such hard workers. And everyone is starting to figure out my sister @kayleetaylorfitness is far more hardcore than I am." See her bikini body after the video!

Mackenzie, who shot to fame on MTV's "16 & Pregnant" then enjoyed a brief "Teen Mom 3" stint before commencing her appearances on "Teen Mom OG" in 2019, is enjoying immense success as she both steals the limelight and builds her business, with 2020 seeing her make headlines for a "ramen to riches" Instagram post revealing prior tough times. McKee showed off her brand new four-wheel drive, but the blonde remains humble, particularly as she continues to honor deceased mom Angie Douthit.

McKee, who is a Type 1 diabetic and made 2019 headlines for a fitness competition, is continuing to build her fitness brand.

"These workouts are to be done at your own pace, anyone can do them, all you need is 30 minutes a day and a set of dumbbells. 6 days a week new workouts everyday. Only for $12.99 a month on www.bodybymac.com," she added today. McKee also influences on Instagram, plus she fronts Justice Nutrition and controversial Boom Bod weight loss shots.

Scroll for Kailyn Lowry admitting her 36DDDs are too large!