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Anna, 30, shared a slideshow of photos of her baby boy.
“It’s hard to believe it has been 18 months since we first held this little guy in our arms,” she wrote.
“Mason is such a strong & determined little guy with a smile that will melt your heart!” Anna continued.
“The joy of being a mommy and nurturing this little life along with his four siblings = a treasure!” she finished.
Fans loved the photos. “A sweet, precious mommy. He is so cute, a sweet baby brother,” one fan wrote.
Anna is very dedicated to her youngest. When she learned he had a milk protein allergy, she completely revamped her diet so she could continue to breastfeed.
What do you think of Anna’s post for Mason? Sound off in the comments below!