The boys' aunt Khloé Kardashian wrote: "I still can't believe they are born on the same day," as Kim Kardashian added: "Happy Birthday Mason and Reign. I love youuuuuuu." Others followed suit ...

Just kidding, love u more than life young blood, happy bday son!” Kardashian also shared a birthday tribute to her sons on Instagram. Her post included a picture of Mason giving his younger ...