"The best thing I've ever done, my greatest role in this life #HappyMothersDay," she wrote.
Her mother Kris Jenner also paid tribute to her mom, her daughters, and their kids—and she now has 10 grandchildren, as daughter Kim Kardashian and husband Kanye Westwelcomed their fourth child and second son via surrogate a few days ago. Not pictured: Kendall Jenner, her only daughter who is not a mom.
"Love you too mom!" she commented.