On Sunday, Kris took to Instagram to share a sweet post in honor of the special holiday, sharing a heartfelt collage of family photos showing her daughters -- Khloe, Kourtney, and Kim Kardashian, as well as Kylie Jenner -- with their cute kids.
"Happy Mother’s Day to all of the beautiful Moms out there, and to the women who are mentors and mother figures to someone special," Kris wrote in the caption.
Kris also included a special thanks for her own mom, Mary Jo "MJ" Campbell, sharing, "To my amazing Mom MJ, I love you more than you will ever know. Thank you for raising me to be strong and independent and for loving me the way you do."
"To my beautiful daughters who are moms, I am so proud of you girls and the mothers you have become," Kris's post continued. "My grandchildren are so blessed that God chose YOU to be their mommies.. I love you @Kourtneykardash @kimkardashian @khloekardashian @kyliejenner... you are my heart #happymothersday."
While the message was undeniably heartfelt and adorable, Kendall was one of the first members of the family to respond in the comments, writing, "Love you too mom!"
While it's possible that Kendall was earnestly expressing her love on the special day, some fans interpreted the comment as a salty joke, implying that the 23-year-old model was jokingly poking fun at feeling left out (despite the fact that it's Mother's Day, specifically).