"He has grown into an incredible young man," she said of her son in a sweet Instagram post on Friday

Maci Bookout Wishes Son Bentley a Happy 8th Birthday: 'He Will Always Be My Baby!'

He may have just turned eight, but Maci Bookout‘s son Bentley will always be her “baby”!

The Teen Mom OG star took to Instagram on Friday to share a sweet snapshot of the mother-son duo from their day at the pumpkin patch and to wish her oldest child a happy 8th birthday.

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“Happy Birthday Bentley! We spent the day with his friends on a field trip to the pumpkin patch and then had an awesome dinner with friends and family!” the caption begins.

“I can’t believe my baby is 8 years old, he has grown into an incredible young man, but he will always be my baby! I love you Bentley!” Bookout writes.

Bookout, who recently wed husband Taylor McKinney at a sprawling Florida location that they had teased during a recent episode of Teen Mom OG, was one of the original stars of MTV’s 16 and Pregnant, which documented her early years of raising Bentley with then-beau Ryan Edwards.

The mother of three and McKinney, 27, got engaged in January — just one month before announcing they were expecting their second child together, son Maverick Reed. They also share a daughter together, 1-year-old Jayde.