Kourtney & Khloe Kardashian Wish Kim Kardashian Happy Birthday with Throwback Pics!

Kourtney Kardashian shows off her large baby bump in a little black dress while out doing business on Wednesday (October 22) in Van Nuys, Calif.

The 35-year-old reality star’s younger sister Khloe was also spotted that same day leaving the same building as her sister just a bit later.

Kourtney and Khloe both wished their sister Kim Kardashian a happy birthday via Twitter the day before – she turned 34 years old!

“Even though I was the bossiest older sister she could ask for, she always loved me. Happy birthday to my sidekick. I love you.” Kourtney wrote, along with a TBT pic.

Click inside to read what Khloe had to say to Kim…

20+ pictures inside of Kourtney and Khloe Kardashian doing promo work…