VIDEO : Kim Kardashian Shares Sweet Message of Gratitude on Her Dad's Birthday: 'Thank You for Every

Kim Kardashian is remembering her dad on what would have been his 73rd birthday. The mother of two took to Twitter to share a sweet family photo from her childhood, alongside a touching message thanking the late Robert Kardashian Sr. for "everything." WATCH: Rob Kardashian Shares Sweet Throwback Pics on Dad Robert Sr.'s Birthday: 'Wish You Were Here to Meet Dream' "Happy Birthday dad! I love this family photo. I love our family," Kim wrote. "Thank you for EVERYTHING. I'm so grateful you are my dad!"