Kim Kardashian & Khloe Kardashian "Beyond Thrilled" for Kourtney Kardashian's Pregnancy!

Sisters may sometimes get jealous of each other, but Kim Kardashian and Khloe Kardashian are "beyond thrilled" for their sister Kourtney Kardashian's second pregnancy.

OK! NEWS: KOURTNEY KARDASHIAN'S PREGNANT

The girls each Tweeted their joy over Kourtney's announcement yesterday that she and boyfriend Scott Disick are expecting their second child.

But they had more to say than simply "Congratulations." Kim was able to put her Kris Humphries divorce trouble aside and be happy for her sister.

"This is such a blessing and the whole family is beyond thrilled!" Kim wrote. "I just know Mason will make the best big brother and I can’t wait to meet my new little niece or nephew!"

OK! NEWS: KARDASHIAN FAMILY TWEETS CONGRATULATIONS TO KOURTNEY KARDASHIAN & SCOTT DISICK'S BABY NEWS

And Khloe and her hubby Lamar Odom may not have made their own "bun in the oven" announcement yet, but the younger sister is also still happy for Kourtney.

"I am BEYOND thrilled to fiiiiinally be able to share with all of you the fabulous news that my beautiful big sister Kourtney is expecting yet again!" she wrote. "Can you believe it?! Masey is going to be a big brother!"

"We are all so overjoyed by this wonderful news and are counting down the minutes until we get to meet the newest member of our family," she added. "Kourtney is the greatest mom in the world and I am so proud of the woman she has become. I can’t wait to see her with a kid in each arm! She’ll be a pro. LOL. And if this next baby is anything like Mason, then we will truly be the luckiest family in the world."