Losing a parent changes a child's life forever. It leaves an enormous hole in their heart that is impossible to replace.

Kourtney And Kim's Tribute

On Thursday, Feb.22, both Kourtney Kardashian and Kim Kardashian West paid homage to their late father, Robert Kardashian. The eldest Kardashian sister posted a photo of her and Kim with their father around the holiday season.

"Daddy's girls. Happy Birthday, Daddy. I miss you every day. Kim wasn't as happy about her dress as I was," wrote Kardashian.

According to Entertainment Tonight, the mother of three decided to pay homage to her late father by having one of her father's favorite desserts to commemorate his birthday. In her Instagram post, Kardashian West showed her 108 million Instagram followers a flashback photo of her father waving as a delicate looking dessert was in front of him.

"Happy Heavenly Birthday Dad! Miss you so bad. I ordered your favorite Ralph's cake to celebrate! Love you forever," wrote Kardashian West.

Rob's Tribute

Kourtney and Kim were not the only members of the Kardashian clan to pay homage to their patriarch. His only son, Rob Kardashian, posted a Throwback Thursday photo on Twitter. Kardashian's 7.59 million Twitter followers saw a rare picture that featured the father and son duo. He also added smiley faces and angel emojis to his tweet.

"Happy Birthday Dad!!" tweeted Kardashian.

Robert Kardashian's Death

According to In Touch Weekly, Kardashian Sr. passed away on Sept. 30, 2003, following a brief battle with esophageal cancer. Kardashian Sr. rose to the national spotlight following the O.J. Simpson Murder Trial that captivated the country. He was one of the lawyers tasked with defending the fallen public figure. Television creator Ryan Murphy revisited the trial on FX's The People vs. O.J. Simpson, and actor David Schwimmer portrayed him in the mini-series.

'Keeping Up With The Kardashians'

In addition to commemorating Kardashian Sr.'s birthday, the family has been busy with their private affairs. In an episode of Keeping Up With the Kardashians, Kourtney Kardashian revealed that she lost over 100 pounds after cutting out sugar and avoiding alcohol. The eldest Kardashian sibling also joined Kim and their half-sister, Kendall Jenner, for a family ski trip in Utah. Khloe was unable to participate due to her pregnancy, while Kylie was "too sick" to join them.

The Kardashian-Jenner family also welcomed new additions to their family over the past few weeks. Kylie gave birth to Stormi Webster on Feb. 1. Meanwhile, Kardashian West and her husband, Kanye, welcomed their third child via surrogate, Chicago West.