It's not that surprising he skipped considering Rob has been staying out of the spotlight since his major weight gain, but where was Kris Jenner? According to TMZ, the Kardashian momager wasn't invited by her former spouse because she's "no longer considered family." Ouch!
We're glad so many of Cait's family members were there to support her on such a special night!
Mine and Kendall's little tears of joy lol. I love my dad.— Kylie Jenner (@KylieJenner) July 16, 2015