Kris Jenner pays tribute to grandsons Mason, 15, and Reign, 10, on their shared birthday: 'I love you both'

Kris Jenner was a proud grandmother as she celebrated her daughter Kourtney Kardashian's sons Mason and Reign's shared birthday on Saturday, December 14.

The 69-year-old Kar-Jenner matriarch took to Instagram to share a carousel of sweet throwback photos of her grandsons over the years.

Kourtney shares 15-year-old Mason and 10-year-old Reign with her ex-boyfriend Scott Disick.

'Happy birthday to my two incredible grandsons, Mason and Reign! Our birthday twins! I still can’t believe the two of you share the exact same birthday. What a special blessing that connects you forever,' Kris began in the lengthy caption.

'You are both so deeply loved, and I am endlessly grateful to God for choosing me to be your grandma.

'Mason, you are so kind, creative, smart, talented, and the best brother, son, grandson, cousin and friend. Watching you grow up and become such a caring and wonderful young man is pure magic—you make us all so proud,' she wrote of the 15-year-old.

Then, the self-proclaimed 'mom-ager' reflected on her relationship with 10-year-old Reign and his 'vibrant' personality.

'Reign, you bring so much energy, laughter, and joy wherever you go. Your inquisitive mind and vibrant personality light up every room. You’re smart, funny, and full of so much love, and I feel blessed to witness the amazing little person you’re becoming,' she said.

Jenner wrapped the post: 'You fill my life with so much pride and happiness, and I love you both with every bit of my heart and soul. I’m so proud of the incredible boys you are and excited for the amazing futures you both have ahead of you! ❤️

Underneath the plethora of throwback images, she tagged Mason's profile as well as Kourtney and Scott's.

'My birthday boys ❤️❤️,' the 45-year-old mother-of-four penned in the comments.

Kourtney welcomed Mason Dash back in 2009 and Reign Aston in 2014. She and Scott also share 12-year-old Penelope Scotland.

In July 2015, the high-profile pair went their separate ways amid cheating rumors after photos of Scott with ex-girlfriend Chloe Bartoli emerged.

Kourtney dated the the 41-year-old Talentless CEO on and off for nine years since 2007, making various appearance of Keeping Up With The Kardashians together. 

However, Kourtney moved onto to Blink-182 drummer Travis Barker, 49, in early 2021.

Travis first proposed to the Los Angeles native back in October of 2021 and kept their plans lowkey before their April 2022 spur-of-the-moment wedding in Sin City.

On May 15, the pair married legally via a courthouse in Santa Barbara, California. Just days later on May 20 the pair had a lavish wedding on the Italian Riviera with family and close friends bearing witness.

When she's not busy being a doting wife, the multihyphenate is a successful entrepreneur pouring into her health and lifestyle brands Poosh and Lemme. 

She founded the successful luxury supplement company back in September of 2022, telling PEOPLE at the time she feels 'really passionate about the ingredients and the combinations.'

According to the Lemme site, the supplements are 'Gummies that give you life, literally. Lemme is a new vitamin and supplement line developed by Kourtney Kardashian to become a divine, feel good part of your everyday life.'

It offers a variety of products that claim to enhance metabolism, mood, energy, sleep, beauty and health.