Teen Mom Mackenzie McKee shows off fit figure in teeny bikini for sweet snap while kissing son Broncs, 5, on the lips

TEEN Mom Mackenzie McKee has shown off her fit figure in a bikini in a new Instagram picture.

The mother-of-three kissed her five-year-old son, Broncs, on the lips in the snap.

Mackenzie posed in a white and orange striped bikini and champion slides while showing off her toned figure.

She held her son, Broncs, who wore blue Spider-Man swim trunks and no shoes, in her arms.

The Teen Mom star kissed him straight on the lips and then both smiled in the second picture.

Broncs held onto her shoulders as his legs dangled in front of her.

Mackenzie and her son were at Adventure Island, a waterpark in Florida.

She took her son there for his birthday.

The MTV star captioned the post, "This boy has come so far in his 5 years of life. He reminds me so much of myself as a kid. Thank you, God, for choosing me to be his mommy."

Many of her followers commented "how sweet" the photos were.

SHOWING HER ABS

Mackenzie continued to document her trip and show off her abs in a series of videos and pictures on Instagram.

She posed in a crop top and Daisy Dukes while at an amusement park with her daughter, Jaxie, 8.

The 27-year-old showed off her toned legs and abs in the outfit as they smiled in the video.

She captioned the series of photos with, "GIRLS DAY. This firecracker talked me into the #slingshot in #orlando. I believe my soul has left my body."

A third picture shows the reality star leaning back on her daughter while licking an ice cream cone.

Mackenzie made a joke saying riding the coaster "made my sugar drop and we got ice cream. #type1diabetes"

They held hands and laughed as a Welcome to Orlando sign was seen behind them.

MOM GONE WILD

Earlier this month, the reality TV star showed off her figure as she twerked on a boat.