Friday would've been the lawyer, businessman and Kardashian family patriarch's 69th birthday. Pregnant Kim tweeted a photo of her dad, quipping, "You would've been pretty old today."
Khloé also Instagrammed a sweet shot of her dad, writing, "Happy birthday old man! I miss you more than you could ever know. Heaven has some amazing people up there. He was His best by His side."
Rob, who's named after his father, shared an adorable vintage photo of the duo. "Happy Birthday Dad!" he wrote. "You were so right! Pimpin ain't easy!"
Kourtney, Kim, Khloé and Rob have all spoken about their father's impact on their lives. While he tragically died of esophageal cancer at age 59, he's very much on all of his kids' minds.
When Kim announced in December that she and Kanye West were expecting their first child, she said the couple felt "blessed" but "[wished] that in addition to both of our families, his mom and my dad could be here to celebrate this special time with us."