Kardashians Celebrate Mason’s 1st Birthday (PHOTOS)

With help from her dear sisters Kim and Khloe Kardashian, Kourtney Kardashian is celebrating her son Mason’s 1st birthday today, December 14!

Kourtney and the doting Kardashian aunties took to their personal blogs to post messages and photos galore of Mason, with Kourt saying: “Happy very first birthday to my little angel Mason! You complete and fulfill my life. This year with you has been more than I could have ever imagined.”

Kim seconded that emotion, writing that “little Mase has changed my life.” Khloe gushed that she “can’t believe it’s been a year since this perfect little person came into our lives.” Click through to coo over Mason’s first year with photos from the Kardashian family album. Tell us in the comments – which precious Mason shot is your favorite?