Courtesy of Kim Kardashian

Kim Kardashian and her brother Rob tweet ‘Happy Birthday’ to their dad, who died in 2003 of cancer.

It’s always a tear-jerker episode of Keeping Up With The Kardashians when deceased attorney Robert Kardashian is part of the conversation.

The father of Kim, Kourtney, Khloe, and Rob Jr. passed away in 2003 of cancer.  And today, his birthday, Rob and Kim are remembering their dad on Twitter.  @RobKardashian tweeted: “Happy Birthday to my Father! Rest In Peace.”

@KimKardashian responded sweetly, “Happy Birthday daddy!”

Robert Kardashian, who was married to the brood’s mom Kris, was best known for representing O.J. Simpson in the murder trial of Nicole Brown Simpson, of which O.J. was acquitted.