The Kylie Cosmetics founder, 25, included in selfies of herself with daughter Stormi, 5, and son Aire, 15 months, as well as a sweet photo of the toddler with his grandmother, "Lovey" Kris Jenner, 67, and her mom Mary Jo "MJ" Shannon, 88. Kylie also shared images of Stormi doting upon her little brother, as well as a pic of herself posing for a maternity photo.
Kylie, who only began sharing pics of Aire's face this past January, captioned her post, simple, "Happy mother's day."
On her Instagram Story, the Kardashians star also posted a photo of a platter of pink frosted, heart-shaped Mother's Day cookies that read, "Love you Mom."
Kris had also paid tribute to her family on Mother's Day, sharing throwback family photos featuring MJ, all of her kids and Kylie and fellow daughters Kim Kardashian, Khloe Kardashian and Kourtney Kardashian's children on her own Instagram page.
"Happy Mother's Day to all of my babies and my mom MJ!" she wrote. "You are my whole heart and soul and I thank God every single day that He blessed me with you!!!! I am such a lucky girl!! I love you so much my beautiful family."
The momager added, "Wishing all the moms out there a happy Mother's Day! #MothersDay"
See the photos of Stormi and Aire that Kylie shared on Mother's Day below: