Los Angeles, June 18 : Reality TV star Kim Kardashian has expressed her happiness at the news of sister Kourtney revealing that she is expecting her first child with Blink-182 drummer-husband Travis Barker.

After Kourtney revealed that she's pregnant on Friday night, Kim took to Instagram to congratulate her sister on the exciting news.

The 42-year-old reality star commented on Kourtney and Travis' joint Instagram announcement, sharing a series of emojis: "

" Kim also reshared her sister's post on her Instagram Stories and wrote, "Congrats!!! We're having a Kravis baby!!!"