Kim Kardashian, sis Kourtney and her daughter Penelope and Kris Jenner honored their late father/husband Robert Kardashian's birthday Wednesday with a luncheon in Calabasas. But let's be honest ... we're less interested in the remembrance of Rob than we are the fashion!

Kim bundled up in a white Yeezy Season 5 puffer jacket, white track pants, a lace bodice bodysuit and Yeezy ankle boots. Kourtney chose a similar look, but she obviously prefers olive green to white -- she sported a Yeezy camo look on Monday.

Even little Penelope get into the game with her panda Adidas track suit. Adorbs!

Kim honored her dad on Twitter, with this sweet throwback ...

Kourtney posted this hilarious pic of her as a baby, with her very 70s parents ...

Happy birthday to the most handsome, funniest, sweetest, best daddy in the world! #MoustacheOnFleek

A post shared by Kourtney Kardashian (@kourtneykardash) on

And the all-but-disappeared Rob Kardashian, posted this pic of his namesake ...

Happy birthday dad woohoo! Wish you were here to meet Dream🙏🙌🙌

A post shared by ROBERT KARDASHIAN (@robkardashian) on

Gone but not forgotten!